Home / 28,711.67-43,065.68-8,989.79

Finding the Fourth Proportional to 28,711.67, 43,065.68 and 8,989.79

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Solution

The fourth proportional to 28,711.67, 43,065.68 and 8,989.79 is: 13,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.67 : 43,065.68 = 8,989.79 : x
  2. Step 2: Convert to fraction form
    28,711.67/43,065.68 = 8,989.79/x
  3. Step 3: Cross multiply
    28,711.67x = 43,065.68 × 8,989.79
  4. Step 4: Simplify right side
    28,711.67x = 387,151,159.13
  5. Step 5: Solve for x
    x = 387,151,159.13/28,711.67
  6. Step 6: Final answer
    x = 13,484.11

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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.