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Finding the Fourth Proportional to 15,006.69, 20,708.93 and 8,292.20

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Solution

The fourth proportional to 15,006.69, 20,708.93 and 8,292.20 is: 11,443.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.69 : 20,708.93 = 8,292.20 : x
  2. Step 2: Convert to fraction form
    15,006.69/20,708.93 = 8,292.20/x
  3. Step 3: Cross multiply
    15,006.69x = 20,708.93 × 8,292.20
  4. Step 4: Simplify right side
    15,006.69x = 171,722,506.53
  5. Step 5: Solve for x
    x = 171,722,506.53/15,006.69
  6. Step 6: Final answer
    x = 11,443.06

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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.