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Finding the Fourth Proportional to 18,937.61, 26,134.01 and 10,984.56

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Solution

The fourth proportional to 18,937.61, 26,134.01 and 10,984.56 is: 15,158.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.61 : 26,134.01 = 10,984.56 : x
  2. Step 2: Convert to fraction form
    18,937.61/26,134.01 = 10,984.56/x
  3. Step 3: Cross multiply
    18,937.61x = 26,134.01 × 10,984.56
  4. Step 4: Simplify right side
    18,937.61x = 287,070,600.89
  5. Step 5: Solve for x
    x = 287,070,600.89/18,937.61
  6. Step 6: Final answer
    x = 15,158.76

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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.