Home / 28,316.55-39,077.84-15,570.70

Finding the Fourth Proportional to 28,316.55, 39,077.84 and 15,570.70

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Solution

The fourth proportional to 28,316.55, 39,077.84 and 15,570.70 is: 21,488.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.55 : 39,077.84 = 15,570.70 : x
  2. Step 2: Convert to fraction form
    28,316.55/39,077.84 = 15,570.70/x
  3. Step 3: Cross multiply
    28,316.55x = 39,077.84 × 15,570.70
  4. Step 4: Simplify right side
    28,316.55x = 608,469,245.43
  5. Step 5: Solve for x
    x = 608,469,245.43/28,316.55
  6. Step 6: Final answer
    x = 21,488.12

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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.