Home / 15,285.66-21,094.13-8,571.28

Finding the Fourth Proportional to 15,285.66, 21,094.13 and 8,571.28

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Solution

The fourth proportional to 15,285.66, 21,094.13 and 8,571.28 is: 11,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.66 : 21,094.13 = 8,571.28 : x
  2. Step 2: Convert to fraction form
    15,285.66/21,094.13 = 8,571.28/x
  3. Step 3: Cross multiply
    15,285.66x = 21,094.13 × 8,571.28
  4. Step 4: Simplify right side
    15,285.66x = 180,803,694.59
  5. Step 5: Solve for x
    x = 180,803,694.59/15,285.66
  6. Step 6: Final answer
    x = 11,828.32

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Half scale
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Double scale
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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.