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Finding the Fourth Proportional to 12,000.80, 16,569.96 and 7,291.40

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Solution

The fourth proportional to 12,000.80, 16,569.96 and 7,291.40 is: 10,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.80 : 16,569.96 = 7,291.40 : x
  2. Step 2: Convert to fraction form
    12,000.80/16,569.96 = 7,291.40/x
  3. Step 3: Cross multiply
    12,000.80x = 16,569.96 × 7,291.40
  4. Step 4: Simplify right side
    12,000.80x = 120,818,206.34
  5. Step 5: Solve for x
    x = 120,818,206.34/12,000.80
  6. Step 6: Final answer
    x = 10,067.51

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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.