Home / 31,917.20-47,897.66-11,140.70

Finding the Fourth Proportional to 31,917.20, 47,897.66 and 11,140.70

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Solution

The fourth proportional to 31,917.20, 47,897.66 and 11,140.70 is: 16,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.20 : 47,897.66 = 11,140.70 : x
  2. Step 2: Convert to fraction form
    31,917.20/47,897.66 = 11,140.70/x
  3. Step 3: Cross multiply
    31,917.20x = 47,897.66 × 11,140.70
  4. Step 4: Simplify right side
    31,917.20x = 533,613,165.57
  5. Step 5: Solve for x
    x = 533,613,165.57/31,917.20
  6. Step 6: Final answer
    x = 16,718.67

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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.