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Finding the Fourth Proportional to 13,691.00, 20,437.46 and 12,030.24

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Solution

The fourth proportional to 13,691.00, 20,437.46 and 12,030.24 is: 17,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.00 : 20,437.46 = 12,030.24 : x
  2. Step 2: Convert to fraction form
    13,691.00/20,437.46 = 12,030.24/x
  3. Step 3: Cross multiply
    13,691.00x = 20,437.46 × 12,030.24
  4. Step 4: Simplify right side
    13,691.00x = 245,867,610.39
  5. Step 5: Solve for x
    x = 245,867,610.39/13,691.00
  6. Step 6: Final answer
    x = 17,958.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.