Home / 31,368.11-43,287.45-17,220.85

Finding the Fourth Proportional to 31,368.11, 43,287.45 and 17,220.85

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Solution

The fourth proportional to 31,368.11, 43,287.45 and 17,220.85 is: 23,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.11 : 43,287.45 = 17,220.85 : x
  2. Step 2: Convert to fraction form
    31,368.11/43,287.45 = 17,220.85/x
  3. Step 3: Cross multiply
    31,368.11x = 43,287.45 × 17,220.85
  4. Step 4: Simplify right side
    31,368.11x = 745,446,510.54
  5. Step 5: Solve for x
    x = 745,446,510.54/31,368.11
  6. Step 6: Final answer
    x = 23,764.47

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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.