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Finding the Fourth Proportional to 13,101.61, 18,080.16 and 7,133.17

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Solution

The fourth proportional to 13,101.61, 18,080.16 and 7,133.17 is: 9,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.61 : 18,080.16 = 7,133.17 : x
  2. Step 2: Convert to fraction form
    13,101.61/18,080.16 = 7,133.17/x
  3. Step 3: Cross multiply
    13,101.61x = 18,080.16 × 7,133.17
  4. Step 4: Simplify right side
    13,101.61x = 128,968,854.91
  5. Step 5: Solve for x
    x = 128,968,854.91/13,101.61
  6. Step 6: Final answer
    x = 9,843.74

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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.