Home / 22,918.65-34,221.18-20,531.31

Finding the Fourth Proportional to 22,918.65, 34,221.18 and 20,531.31

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Solution

The fourth proportional to 22,918.65, 34,221.18 and 20,531.31 is: 30,656.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,918.65 : 34,221.18 = 20,531.31 : x
  2. Step 2: Convert to fraction form
    22,918.65/34,221.18 = 20,531.31/x
  3. Step 3: Cross multiply
    22,918.65x = 34,221.18 × 20,531.31
  4. Step 4: Simplify right side
    22,918.65x = 702,605,655.15
  5. Step 5: Solve for x
    x = 702,605,655.15/22,918.65
  6. Step 6: Final answer
    x = 30,656.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.