Home / 31,487.05-47,216.40-9,292.78

Finding the Fourth Proportional to 31,487.05, 47,216.40 and 9,292.78

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Solution

The fourth proportional to 31,487.05, 47,216.40 and 9,292.78 is: 13,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.05 : 47,216.40 = 9,292.78 : x
  2. Step 2: Convert to fraction form
    31,487.05/47,216.40 = 9,292.78/x
  3. Step 3: Cross multiply
    31,487.05x = 47,216.40 × 9,292.78
  4. Step 4: Simplify right side
    31,487.05x = 438,771,617.59
  5. Step 5: Solve for x
    x = 438,771,617.59/31,487.05
  6. Step 6: Final answer
    x = 13,934.99

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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.