Home / 15,428.92-21,310.90-11,173.24

Finding the Fourth Proportional to 15,428.92, 21,310.90 and 11,173.24

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Solution

The fourth proportional to 15,428.92, 21,310.90 and 11,173.24 is: 15,432.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.92 : 21,310.90 = 11,173.24 : x
  2. Step 2: Convert to fraction form
    15,428.92/21,310.90 = 11,173.24/x
  3. Step 3: Cross multiply
    15,428.92x = 21,310.90 × 11,173.24
  4. Step 4: Simplify right side
    15,428.92x = 238,111,800.32
  5. Step 5: Solve for x
    x = 238,111,800.32/15,428.92
  6. Step 6: Final answer
    x = 15,432.82

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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.