Home / 27,649.80-38,155.08-15,711.48

Finding the Fourth Proportional to 27,649.80, 38,155.08 and 15,711.48

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Solution

The fourth proportional to 27,649.80, 38,155.08 and 15,711.48 is: 21,680.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,649.80 : 38,155.08 = 15,711.48 : x
  2. Step 2: Convert to fraction form
    27,649.80/38,155.08 = 15,711.48/x
  3. Step 3: Cross multiply
    27,649.80x = 38,155.08 × 15,711.48
  4. Step 4: Simplify right side
    27,649.80x = 599,472,776.32
  5. Step 5: Solve for x
    x = 599,472,776.32/27,649.80
  6. Step 6: Final answer
    x = 21,680.91

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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.