Home / 18,125.28-25,020-12,847.68

Finding the Fourth Proportional to 18,125.28, 25,020 and 12,847.68

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Solution

The fourth proportional to 18,125.28, 25,020 and 12,847.68 is: 17,734.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.28 : 25,020 = 12,847.68 : x
  2. Step 2: Convert to fraction form
    18,125.28/25,020 = 12,847.68/x
  3. Step 3: Cross multiply
    18,125.28x = 25,020 × 12,847.68
  4. Step 4: Simplify right side
    18,125.28x = 321,448,953.60
  5. Step 5: Solve for x
    x = 321,448,953.60/18,125.28
  6. Step 6: Final answer
    x = 17,734.84

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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.