Home / 15,358.95-21,195.17-8,899.47

Finding the Fourth Proportional to 15,358.95, 21,195.17 and 8,899.47

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Solution

The fourth proportional to 15,358.95, 21,195.17 and 8,899.47 is: 12,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.95 : 21,195.17 = 8,899.47 : x
  2. Step 2: Convert to fraction form
    15,358.95/21,195.17 = 8,899.47/x
  3. Step 3: Cross multiply
    15,358.95x = 21,195.17 × 8,899.47
  4. Step 4: Simplify right side
    15,358.95x = 188,625,768.44
  5. Step 5: Solve for x
    x = 188,625,768.44/15,358.95
  6. Step 6: Final answer
    x = 12,281.16

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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.