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Finding the Fourth Proportional to 18,950.40, 26,158.08 and 11,400.96

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Solution

The fourth proportional to 18,950.40, 26,158.08 and 11,400.96 is: 15,737.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.40 : 26,158.08 = 11,400.96 : x
  2. Step 2: Convert to fraction form
    18,950.40/26,158.08 = 11,400.96/x
  3. Step 3: Cross multiply
    18,950.40x = 26,158.08 × 11,400.96
  4. Step 4: Simplify right side
    18,950.40x = 298,227,223.76
  5. Step 5: Solve for x
    x = 298,227,223.76/18,950.40
  6. Step 6: Final answer
    x = 15,737.25

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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.