Home / 18,677.39-25,777.85-11,124.14

Finding the Fourth Proportional to 18,677.39, 25,777.85 and 11,124.14

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Solution

The fourth proportional to 18,677.39, 25,777.85 and 11,124.14 is: 15,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.39 : 25,777.85 = 11,124.14 : x
  2. Step 2: Convert to fraction form
    18,677.39/25,777.85 = 11,124.14/x
  3. Step 3: Cross multiply
    18,677.39x = 25,777.85 × 11,124.14
  4. Step 4: Simplify right side
    18,677.39x = 286,756,227.79
  5. Step 5: Solve for x
    x = 286,756,227.79/18,677.39
  6. Step 6: Final answer
    x = 15,353.13

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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.