Home / 14,805.90-20,422.13-9,507.15

Finding the Fourth Proportional to 14,805.90, 20,422.13 and 9,507.15

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Solution

The fourth proportional to 14,805.90, 20,422.13 and 9,507.15 is: 13,113.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,805.90 : 20,422.13 = 9,507.15 : x
  2. Step 2: Convert to fraction form
    14,805.90/20,422.13 = 9,507.15/x
  3. Step 3: Cross multiply
    14,805.90x = 20,422.13 × 9,507.15
  4. Step 4: Simplify right side
    14,805.90x = 194,156,205.69
  5. Step 5: Solve for x
    x = 194,156,205.69/14,805.90
  6. Step 6: Final answer
    x = 13,113.43

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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.