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Finding the Fourth Proportional to 14,699.05, 20,287.89 and 9,038.66

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Solution

The fourth proportional to 14,699.05, 20,287.89 and 9,038.66 is: 12,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,699.05 : 20,287.89 = 9,038.66 : x
  2. Step 2: Convert to fraction form
    14,699.05/20,287.89 = 9,038.66/x
  3. Step 3: Cross multiply
    14,699.05x = 20,287.89 × 9,038.66
  4. Step 4: Simplify right side
    14,699.05x = 183,375,390.55
  5. Step 5: Solve for x
    x = 183,375,390.55/14,699.05
  6. Step 6: Final answer
    x = 12,475.32

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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.