Home / 31,572.30-47,358.45-18,417.90

Finding the Fourth Proportional to 31,572.30, 47,358.45 and 18,417.90

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Solution

The fourth proportional to 31,572.30, 47,358.45 and 18,417.90 is: 27,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,572.30 : 47,358.45 = 18,417.90 : x
  2. Step 2: Convert to fraction form
    31,572.30/47,358.45 = 18,417.90/x
  3. Step 3: Cross multiply
    31,572.30x = 47,358.45 × 18,417.90
  4. Step 4: Simplify right side
    31,572.30x = 872,243,196.26
  5. Step 5: Solve for x
    x = 872,243,196.26/31,572.30
  6. Step 6: Final answer
    x = 27,626.85

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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.