Home / 28,437.32-42,664.17-8,718.78

Finding the Fourth Proportional to 28,437.32, 42,664.17 and 8,718.78

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Solution

The fourth proportional to 28,437.32, 42,664.17 and 8,718.78 is: 13,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.32 : 42,664.17 = 8,718.78 : x
  2. Step 2: Convert to fraction form
    28,437.32/42,664.17 = 8,718.78/x
  3. Step 3: Cross multiply
    28,437.32x = 42,664.17 × 8,718.78
  4. Step 4: Simplify right side
    28,437.32x = 371,979,512.11
  5. Step 5: Solve for x
    x = 371,979,512.11/28,437.32
  6. Step 6: Final answer
    x = 13,080.68

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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.