Home / 31,161.90-43,001.76-17,011.98

Finding the Fourth Proportional to 31,161.90, 43,001.76 and 17,011.98

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Solution

The fourth proportional to 31,161.90, 43,001.76 and 17,011.98 is: 23,475.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.90 : 43,001.76 = 17,011.98 : x
  2. Step 2: Convert to fraction form
    31,161.90/43,001.76 = 17,011.98/x
  3. Step 3: Cross multiply
    31,161.90x = 43,001.76 × 17,011.98
  4. Step 4: Simplify right side
    31,161.90x = 731,545,081.08
  5. Step 5: Solve for x
    x = 731,545,081.08/31,161.90
  6. Step 6: Final answer
    x = 23,475.63

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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.