Home / 28,318.85-39,079.22-15,572.06

Finding the Fourth Proportional to 28,318.85, 39,079.22 and 15,572.06

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Solution

The fourth proportional to 28,318.85, 39,079.22 and 15,572.06 is: 21,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.85 : 39,079.22 = 15,572.06 : x
  2. Step 2: Convert to fraction form
    28,318.85/39,079.22 = 15,572.06/x
  3. Step 3: Cross multiply
    28,318.85x = 39,079.22 × 15,572.06
  4. Step 4: Simplify right side
    28,318.85x = 608,543,765.77
  5. Step 5: Solve for x
    x = 608,543,765.77/28,318.85
  6. Step 6: Final answer
    x = 21,489.00

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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.