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Finding the Fourth Proportional to 18,937.71, 26,132.93 and 10,869.50

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Solution

The fourth proportional to 18,937.71, 26,132.93 and 10,869.50 is: 14,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.71 : 26,132.93 = 10,869.50 : x
  2. Step 2: Convert to fraction form
    18,937.71/26,132.93 = 10,869.50/x
  3. Step 3: Cross multiply
    18,937.71x = 26,132.93 × 10,869.50
  4. Step 4: Simplify right side
    18,937.71x = 284,051,697.62
  5. Step 5: Solve for x
    x = 284,051,697.62/18,937.71
  6. Step 6: Final answer
    x = 14,999.26

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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.