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Finding the Fourth Proportional to 13,101, 18,079.35 and 7,132.65

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Solution

The fourth proportional to 13,101, 18,079.35 and 7,132.65 is: 9,843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101 : 18,079.35 = 7,132.65 : x
  2. Step 2: Convert to fraction form
    13,101/18,079.35 = 7,132.65/x
  3. Step 3: Cross multiply
    13,101x = 18,079.35 × 7,132.65
  4. Step 4: Simplify right side
    13,101x = 128,953,675.78
  5. Step 5: Solve for x
    x = 128,953,675.78/13,101
  6. Step 6: Final answer
    x = 9,843.04

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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.