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Finding the Fourth Proportional to 18,130.88, 27,189.80 and 6,281.46

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Solution

The fourth proportional to 18,130.88, 27,189.80 and 6,281.46 is: 9,419.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.88 : 27,189.80 = 6,281.46 : x
  2. Step 2: Convert to fraction form
    18,130.88/27,189.80 = 6,281.46/x
  3. Step 3: Cross multiply
    18,130.88x = 27,189.80 × 6,281.46
  4. Step 4: Simplify right side
    18,130.88x = 170,791,641.11
  5. Step 5: Solve for x
    x = 170,791,641.11/18,130.88
  6. Step 6: Final answer
    x = 9,419.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.