Home / 20,849.57-28,776.87-13,294.16

Finding the Fourth Proportional to 20,849.57, 28,776.87 and 13,294.16

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Solution

The fourth proportional to 20,849.57, 28,776.87 and 13,294.16 is: 18,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.57 : 28,776.87 = 13,294.16 : x
  2. Step 2: Convert to fraction form
    20,849.57/28,776.87 = 13,294.16/x
  3. Step 3: Cross multiply
    20,849.57x = 28,776.87 × 13,294.16
  4. Step 4: Simplify right side
    20,849.57x = 382,564,314.08
  5. Step 5: Solve for x
    x = 382,564,314.08/20,849.57
  6. Step 6: Final answer
    x = 18,348.79

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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.