Home / 15,519.27-21,417.08-8,805.18

Finding the Fourth Proportional to 15,519.27, 21,417.08 and 8,805.18

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Solution

The fourth proportional to 15,519.27, 21,417.08 and 8,805.18 is: 12,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.27 : 21,417.08 = 8,805.18 : x
  2. Step 2: Convert to fraction form
    15,519.27/21,417.08 = 8,805.18/x
  3. Step 3: Cross multiply
    15,519.27x = 21,417.08 × 8,805.18
  4. Step 4: Simplify right side
    15,519.27x = 188,581,200.45
  5. Step 5: Solve for x
    x = 188,581,200.45/15,519.27
  6. Step 6: Final answer
    x = 12,151.42

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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.