Home / 31,613.55-47,427.21-9,428.73

Finding the Fourth Proportional to 31,613.55, 47,427.21 and 9,428.73

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Solution

The fourth proportional to 31,613.55, 47,427.21 and 9,428.73 is: 14,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.55 : 47,427.21 = 9,428.73 : x
  2. Step 2: Convert to fraction form
    31,613.55/47,427.21 = 9,428.73/x
  3. Step 3: Cross multiply
    31,613.55x = 47,427.21 × 9,428.73
  4. Step 4: Simplify right side
    31,613.55x = 447,178,357.74
  5. Step 5: Solve for x
    x = 447,178,357.74/31,613.55
  6. Step 6: Final answer
    x = 14,145.15

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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.