Home / 31,666.85-43,699.27-18,917.17

Finding the Fourth Proportional to 31,666.85, 43,699.27 and 18,917.17

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Solution

The fourth proportional to 31,666.85, 43,699.27 and 18,917.17 is: 26,105.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,666.85 : 43,699.27 = 18,917.17 : x
  2. Step 2: Convert to fraction form
    31,666.85/43,699.27 = 18,917.17/x
  3. Step 3: Cross multiply
    31,666.85x = 43,699.27 × 18,917.17
  4. Step 4: Simplify right side
    31,666.85x = 826,666,758.86
  5. Step 5: Solve for x
    x = 826,666,758.86/31,666.85
  6. Step 6: Final answer
    x = 26,105.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.