Home / 31,417.68-47,123.70-18,853.38

Finding the Fourth Proportional to 31,417.68, 47,123.70 and 18,853.38

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Solution

The fourth proportional to 31,417.68, 47,123.70 and 18,853.38 is: 28,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.68 : 47,123.70 = 18,853.38 : x
  2. Step 2: Convert to fraction form
    31,417.68/47,123.70 = 18,853.38/x
  3. Step 3: Cross multiply
    31,417.68x = 47,123.70 × 18,853.38
  4. Step 4: Simplify right side
    31,417.68x = 888,441,023.11
  5. Step 5: Solve for x
    x = 888,441,023.11/31,417.68
  6. Step 6: Final answer
    x = 28,278.38

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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.