Home / 15,420.20-23,116.13-5,557.07

Finding the Fourth Proportional to 15,420.20, 23,116.13 and 5,557.07

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Solution

The fourth proportional to 15,420.20, 23,116.13 and 5,557.07 is: 8,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.20 : 23,116.13 = 5,557.07 : x
  2. Step 2: Convert to fraction form
    15,420.20/23,116.13 = 5,557.07/x
  3. Step 3: Cross multiply
    15,420.20x = 23,116.13 × 5,557.07
  4. Step 4: Simplify right side
    15,420.20x = 128,457,809.17
  5. Step 5: Solve for x
    x = 128,457,809.17/15,420.20
  6. Step 6: Final answer
    x = 8,330.49

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.