Home / 31,330.94-47,008.71-13,788.47

Finding the Fourth Proportional to 31,330.94, 47,008.71 and 13,788.47

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Solution

The fourth proportional to 31,330.94, 47,008.71 and 13,788.47 is: 20,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.94 : 47,008.71 = 13,788.47 : x
  2. Step 2: Convert to fraction form
    31,330.94/47,008.71 = 13,788.47/x
  3. Step 3: Cross multiply
    31,330.94x = 47,008.71 × 13,788.47
  4. Step 4: Simplify right side
    31,330.94x = 648,177,952.53
  5. Step 5: Solve for x
    x = 648,177,952.53/31,330.94
  6. Step 6: Final answer
    x = 20,688.11

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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.