Home / 31,617.20-47,428.20-9,428.84

Finding the Fourth Proportional to 31,617.20, 47,428.20 and 9,428.84

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Solution

The fourth proportional to 31,617.20, 47,428.20 and 9,428.84 is: 14,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617.20 : 47,428.20 = 9,428.84 : x
  2. Step 2: Convert to fraction form
    31,617.20/47,428.20 = 9,428.84/x
  3. Step 3: Cross multiply
    31,617.20x = 47,428.20 × 9,428.84
  4. Step 4: Simplify right side
    31,617.20x = 447,192,909.29
  5. Step 5: Solve for x
    x = 447,192,909.29/31,617.20
  6. Step 6: Final answer
    x = 14,143.98

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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.