Home / 28,318.23-39,079.18-15,571.62

Finding the Fourth Proportional to 28,318.23, 39,079.18 and 15,571.62

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Solution

The fourth proportional to 28,318.23, 39,079.18 and 15,571.62 is: 21,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.23 : 39,079.18 = 15,571.62 : x
  2. Step 2: Convert to fraction form
    28,318.23/39,079.18 = 15,571.62/x
  3. Step 3: Cross multiply
    28,318.23x = 39,079.18 × 15,571.62
  4. Step 4: Simplify right side
    28,318.23x = 608,526,140.87
  5. Step 5: Solve for x
    x = 608,526,140.87/28,318.23
  6. Step 6: Final answer
    x = 21,488.85

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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.