Home / 31,239.85-43,111.76-17,812.38

Finding the Fourth Proportional to 31,239.85, 43,111.76 and 17,812.38

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Solution

The fourth proportional to 31,239.85, 43,111.76 and 17,812.38 is: 24,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,239.85 : 43,111.76 = 17,812.38 : x
  2. Step 2: Convert to fraction form
    31,239.85/43,111.76 = 17,812.38/x
  3. Step 3: Cross multiply
    31,239.85x = 43,111.76 × 17,812.38
  4. Step 4: Simplify right side
    31,239.85x = 767,923,051.59
  5. Step 5: Solve for x
    x = 767,923,051.59/31,239.85
  6. Step 6: Final answer
    x = 24,581.52

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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.