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Finding the Fourth Proportional to 15,287.91, 22,920.99 and 5,920.02

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Solution

The fourth proportional to 15,287.91, 22,920.99 and 5,920.02 is: 8,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.91 : 22,920.99 = 5,920.02 : x
  2. Step 2: Convert to fraction form
    15,287.91/22,920.99 = 5,920.02/x
  3. Step 3: Cross multiply
    15,287.91x = 22,920.99 × 5,920.02
  4. Step 4: Simplify right side
    15,287.91x = 135,692,719.22
  5. Step 5: Solve for x
    x = 135,692,719.22/15,287.91
  6. Step 6: Final answer
    x = 8,875.82

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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.