Home / 27,778.16-38,332.90-15,845.34

Finding the Fourth Proportional to 27,778.16, 38,332.90 and 15,845.34

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Solution

The fourth proportional to 27,778.16, 38,332.90 and 15,845.34 is: 21,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.16 : 38,332.90 = 15,845.34 : x
  2. Step 2: Convert to fraction form
    27,778.16/38,332.90 = 15,845.34/x
  3. Step 3: Cross multiply
    27,778.16x = 38,332.90 × 15,845.34
  4. Step 4: Simplify right side
    27,778.16x = 607,397,833.69
  5. Step 5: Solve for x
    x = 607,397,833.69/27,778.16
  6. Step 6: Final answer
    x = 21,866.02

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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.