Home / 28,318.67-39,080.76-15,572.83

Finding the Fourth Proportional to 28,318.67, 39,080.76 and 15,572.83

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Solution

The fourth proportional to 28,318.67, 39,080.76 and 15,572.83 is: 21,491.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.67 : 39,080.76 = 15,572.83 : x
  2. Step 2: Convert to fraction form
    28,318.67/39,080.76 = 15,572.83/x
  3. Step 3: Cross multiply
    28,318.67x = 39,080.76 × 15,572.83
  4. Step 4: Simplify right side
    28,318.67x = 608,597,875.28
  5. Step 5: Solve for x
    x = 608,597,875.28/28,318.67
  6. Step 6: Final answer
    x = 21,491.05

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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.