Home / 20,924.49-28,865.13-13,362.87

Finding the Fourth Proportional to 20,924.49, 28,865.13 and 13,362.87

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Solution

The fourth proportional to 20,924.49, 28,865.13 and 13,362.87 is: 18,433.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.49 : 28,865.13 = 13,362.87 : x
  2. Step 2: Convert to fraction form
    20,924.49/28,865.13 = 13,362.87/x
  3. Step 3: Cross multiply
    20,924.49x = 28,865.13 × 13,362.87
  4. Step 4: Simplify right side
    20,924.49x = 385,721,037.86
  5. Step 5: Solve for x
    x = 385,721,037.86/20,924.49
  6. Step 6: Final answer
    x = 18,433.95

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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.