Home / 31,428.68-47,158.40-14,788.04

Finding the Fourth Proportional to 31,428.68, 47,158.40 and 14,788.04

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Solution

The fourth proportional to 31,428.68, 47,158.40 and 14,788.04 is: 22,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.68 : 47,158.40 = 14,788.04 : x
  2. Step 2: Convert to fraction form
    31,428.68/47,158.40 = 14,788.04/x
  3. Step 3: Cross multiply
    31,428.68x = 47,158.40 × 14,788.04
  4. Step 4: Simplify right side
    31,428.68x = 697,380,305.54
  5. Step 5: Solve for x
    x = 697,380,305.54/31,428.68
  6. Step 6: Final answer
    x = 22,189.30

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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.