Home / 28,711.48-43,073.72-9,992.40

Finding the Fourth Proportional to 28,711.48, 43,073.72 and 9,992.40

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Solution

The fourth proportional to 28,711.48, 43,073.72 and 9,992.40 is: 14,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.48 : 43,073.72 = 9,992.40 : x
  2. Step 2: Convert to fraction form
    28,711.48/43,073.72 = 9,992.40/x
  3. Step 3: Cross multiply
    28,711.48x = 43,073.72 × 9,992.40
  4. Step 4: Simplify right side
    28,711.48x = 430,409,839.73
  5. Step 5: Solve for x
    x = 430,409,839.73/28,711.48
  6. Step 6: Final answer
    x = 14,990.86

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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.