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Finding the Fourth Proportional to 18,117.70, 24,986.05 and 11,737.81

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Solution

The fourth proportional to 18,117.70, 24,986.05 and 11,737.81 is: 16,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.70 : 24,986.05 = 11,737.81 : x
  2. Step 2: Convert to fraction form
    18,117.70/24,986.05 = 11,737.81/x
  3. Step 3: Cross multiply
    18,117.70x = 24,986.05 × 11,737.81
  4. Step 4: Simplify right side
    18,117.70x = 293,281,507.55
  5. Step 5: Solve for x
    x = 293,281,507.55/18,117.70
  6. Step 6: Final answer
    x = 16,187.57

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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.