Home / 15,285.15-21,094.52-8,571.21

Finding the Fourth Proportional to 15,285.15, 21,094.52 and 8,571.21

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Solution

The fourth proportional to 15,285.15, 21,094.52 and 8,571.21 is: 11,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.15 : 21,094.52 = 8,571.21 : x
  2. Step 2: Convert to fraction form
    15,285.15/21,094.52 = 8,571.21/x
  3. Step 3: Cross multiply
    15,285.15x = 21,094.52 × 8,571.21
  4. Step 4: Simplify right side
    15,285.15x = 180,805,438.81
  5. Step 5: Solve for x
    x = 180,805,438.81/15,285.15
  6. Step 6: Final answer
    x = 11,828.83

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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.