Home / 22,567.20-31,132.80-13,615.08

Finding the Fourth Proportional to 22,567.20, 31,132.80 and 13,615.08

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Solution

The fourth proportional to 22,567.20, 31,132.80 and 13,615.08 is: 18,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,567.20 : 31,132.80 = 13,615.08 : x
  2. Step 2: Convert to fraction form
    22,567.20/31,132.80 = 13,615.08/x
  3. Step 3: Cross multiply
    22,567.20x = 31,132.80 × 13,615.08
  4. Step 4: Simplify right side
    22,567.20x = 423,875,562.62
  5. Step 5: Solve for x
    x = 423,875,562.62/22,567.20
  6. Step 6: Final answer
    x = 18,782.82

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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.