Home / 28,486.11-42,724.17-7,704.75

Finding the Fourth Proportional to 28,486.11, 42,724.17 and 7,704.75

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Solution

The fourth proportional to 28,486.11, 42,724.17 and 7,704.75 is: 11,555.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.11 : 42,724.17 = 7,704.75 : x
  2. Step 2: Convert to fraction form
    28,486.11/42,724.17 = 7,704.75/x
  3. Step 3: Cross multiply
    28,486.11x = 42,724.17 × 7,704.75
  4. Step 4: Simplify right side
    28,486.11x = 329,179,048.81
  5. Step 5: Solve for x
    x = 329,179,048.81/28,486.11
  6. Step 6: Final answer
    x = 11,555.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.