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Finding the Fourth Proportional to 18,990.60, 26,207.03 and 10,376.90

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Solution

The fourth proportional to 18,990.60, 26,207.03 and 10,376.90 is: 14,320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.60 : 26,207.03 = 10,376.90 : x
  2. Step 2: Convert to fraction form
    18,990.60/26,207.03 = 10,376.90/x
  3. Step 3: Cross multiply
    18,990.60x = 26,207.03 × 10,376.90
  4. Step 4: Simplify right side
    18,990.60x = 271,947,729.61
  5. Step 5: Solve for x
    x = 271,947,729.61/18,990.60
  6. Step 6: Final answer
    x = 14,320.12

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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.