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Finding the Fourth Proportional to 13,598.40, 20,378.40 and 10,060.80

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Solution

The fourth proportional to 13,598.40, 20,378.40 and 10,060.80 is: 15,076.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.40 : 20,378.40 = 10,060.80 : x
  2. Step 2: Convert to fraction form
    13,598.40/20,378.40 = 10,060.80/x
  3. Step 3: Cross multiply
    13,598.40x = 20,378.40 × 10,060.80
  4. Step 4: Simplify right side
    13,598.40x = 205,023,006.72
  5. Step 5: Solve for x
    x = 205,023,006.72/13,598.40
  6. Step 6: Final answer
    x = 15,076.99

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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.