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Finding the Fourth Proportional to 14,689.22, 20,264.54 and 9,907.61

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Solution

The fourth proportional to 14,689.22, 20,264.54 and 9,907.61 is: 13,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.22 : 20,264.54 = 9,907.61 : x
  2. Step 2: Convert to fraction form
    14,689.22/20,264.54 = 9,907.61/x
  3. Step 3: Cross multiply
    14,689.22x = 20,264.54 × 9,907.61
  4. Step 4: Simplify right side
    14,689.22x = 200,773,197.43
  5. Step 5: Solve for x
    x = 200,773,197.43/14,689.22
  6. Step 6: Final answer
    x = 13,668.06

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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.