Home / 31,491.52-47,239.79-10,430.71

Finding the Fourth Proportional to 31,491.52, 47,239.79 and 10,430.71

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Solution

The fourth proportional to 31,491.52, 47,239.79 and 10,430.71 is: 15,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,491.52 : 47,239.79 = 10,430.71 : x
  2. Step 2: Convert to fraction form
    31,491.52/47,239.79 = 10,430.71/x
  3. Step 3: Cross multiply
    31,491.52x = 47,239.79 × 10,430.71
  4. Step 4: Simplify right side
    31,491.52x = 492,744,549.95
  5. Step 5: Solve for x
    x = 492,744,549.95/31,491.52
  6. Step 6: Final answer
    x = 15,646.90

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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.