Home / 34,278.69-47,309.94-20,854.16

Finding the Fourth Proportional to 34,278.69, 47,309.94 and 20,854.16

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Solution

The fourth proportional to 34,278.69, 47,309.94 and 20,854.16 is: 28,781.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,278.69 : 47,309.94 = 20,854.16 : x
  2. Step 2: Convert to fraction form
    34,278.69/47,309.94 = 20,854.16/x
  3. Step 3: Cross multiply
    34,278.69x = 47,309.94 × 20,854.16
  4. Step 4: Simplify right side
    34,278.69x = 986,608,821.80
  5. Step 5: Solve for x
    x = 986,608,821.80/34,278.69
  6. Step 6: Final answer
    x = 28,781.99

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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.