Home / 28,446.92-42,638.59-10,660.47

Finding the Fourth Proportional to 28,446.92, 42,638.59 and 10,660.47

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Solution

The fourth proportional to 28,446.92, 42,638.59 and 10,660.47 is: 15,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.92 : 42,638.59 = 10,660.47 : x
  2. Step 2: Convert to fraction form
    28,446.92/42,638.59 = 10,660.47/x
  3. Step 3: Cross multiply
    28,446.92x = 42,638.59 × 10,660.47
  4. Step 4: Simplify right side
    28,446.92x = 454,547,143.04
  5. Step 5: Solve for x
    x = 454,547,143.04/28,446.92
  6. Step 6: Final answer
    x = 15,978.78

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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.