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Finding the Fourth Proportional to 18,117.87, 24,991.15 and 13,089.48

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Solution

The fourth proportional to 18,117.87, 24,991.15 and 13,089.48 is: 18,055.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.87 : 24,991.15 = 13,089.48 : x
  2. Step 2: Convert to fraction form
    18,117.87/24,991.15 = 13,089.48/x
  3. Step 3: Cross multiply
    18,117.87x = 24,991.15 × 13,089.48
  4. Step 4: Simplify right side
    18,117.87x = 327,121,158.10
  5. Step 5: Solve for x
    x = 327,121,158.10/18,117.87
  6. Step 6: Final answer
    x = 18,055.17

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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.