Home / 22,387.95-30,909.56-13,899.08

Finding the Fourth Proportional to 22,387.95, 30,909.56 and 13,899.08

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Solution

The fourth proportional to 22,387.95, 30,909.56 and 13,899.08 is: 19,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,387.95 : 30,909.56 = 13,899.08 : x
  2. Step 2: Convert to fraction form
    22,387.95/30,909.56 = 13,899.08/x
  3. Step 3: Cross multiply
    22,387.95x = 30,909.56 × 13,899.08
  4. Step 4: Simplify right side
    22,387.95x = 429,614,281.12
  5. Step 5: Solve for x
    x = 429,614,281.12/22,387.95
  6. Step 6: Final answer
    x = 19,189.53

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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.