Home / 15,644.77-21,589.76-8,571.20

Finding the Fourth Proportional to 15,644.77, 21,589.76 and 8,571.20

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Solution

The fourth proportional to 15,644.77, 21,589.76 and 8,571.20 is: 11,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.77 : 21,589.76 = 8,571.20 : x
  2. Step 2: Convert to fraction form
    15,644.77/21,589.76 = 8,571.20/x
  3. Step 3: Cross multiply
    15,644.77x = 21,589.76 × 8,571.20
  4. Step 4: Simplify right side
    15,644.77x = 185,050,064.39
  5. Step 5: Solve for x
    x = 185,050,064.39/15,644.77
  6. Step 6: Final answer
    x = 11,828.24

Related Problems

Find fourth proportional to 7,822.38, 10,794.88 and 4,285.60
Half scale
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Double scale
Find fourth proportional to 15,645.77, 21,591.14 and 8,572.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.