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Finding the Fourth Proportional to 13,697.92, 18,870.33 and 13,030.90

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Solution

The fourth proportional to 13,697.92, 18,870.33 and 13,030.90 is: 17,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.92 : 18,870.33 = 13,030.90 : x
  2. Step 2: Convert to fraction form
    13,697.92/18,870.33 = 13,030.90/x
  3. Step 3: Cross multiply
    13,697.92x = 18,870.33 × 13,030.90
  4. Step 4: Simplify right side
    13,697.92x = 245,897,383.20
  5. Step 5: Solve for x
    x = 245,897,383.20/13,697.92
  6. Step 6: Final answer
    x = 17,951.44

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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.