Home / 28,156.32-42,207.18-15,664.92

Finding the Fourth Proportional to 28,156.32, 42,207.18 and 15,664.92

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Solution

The fourth proportional to 28,156.32, 42,207.18 and 15,664.92 is: 23,482.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.32 : 42,207.18 = 15,664.92 : x
  2. Step 2: Convert to fraction form
    28,156.32/42,207.18 = 15,664.92/x
  3. Step 3: Cross multiply
    28,156.32x = 42,207.18 × 15,664.92
  4. Step 4: Simplify right side
    28,156.32x = 661,172,098.13
  5. Step 5: Solve for x
    x = 661,172,098.13/28,156.32
  6. Step 6: Final answer
    x = 23,482.19

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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.