Home / 18,785.75-25,925.15-10,402.25

Finding the Fourth Proportional to 18,785.75, 25,925.15 and 10,402.25

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Solution

The fourth proportional to 18,785.75, 25,925.15 and 10,402.25 is: 14,355.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.75 : 25,925.15 = 10,402.25 : x
  2. Step 2: Convert to fraction form
    18,785.75/25,925.15 = 10,402.25/x
  3. Step 3: Cross multiply
    18,785.75x = 25,925.15 × 10,402.25
  4. Step 4: Simplify right side
    18,785.75x = 269,679,839.58
  5. Step 5: Solve for x
    x = 269,679,839.58/18,785.75
  6. Step 6: Final answer
    x = 14,355.55

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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.