Home / 25,155.12-34,711.66-15,081.68

Finding the Fourth Proportional to 25,155.12, 34,711.66 and 15,081.68

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Solution

The fourth proportional to 25,155.12, 34,711.66 and 15,081.68 is: 20,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,155.12 : 34,711.66 = 15,081.68 : x
  2. Step 2: Convert to fraction form
    25,155.12/34,711.66 = 15,081.68/x
  3. Step 3: Cross multiply
    25,155.12x = 34,711.66 × 15,081.68
  4. Step 4: Simplify right side
    25,155.12x = 523,510,148.39
  5. Step 5: Solve for x
    x = 523,510,148.39/25,155.12
  6. Step 6: Final answer
    x = 20,811.28

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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.