Home / 27,698.15-38,223.24-15,122.90

Finding the Fourth Proportional to 27,698.15, 38,223.24 and 15,122.90

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Solution

The fourth proportional to 27,698.15, 38,223.24 and 15,122.90 is: 20,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,698.15 : 38,223.24 = 15,122.90 : x
  2. Step 2: Convert to fraction form
    27,698.15/38,223.24 = 15,122.90/x
  3. Step 3: Cross multiply
    27,698.15x = 38,223.24 × 15,122.90
  4. Step 4: Simplify right side
    27,698.15x = 578,046,236.20
  5. Step 5: Solve for x
    x = 578,046,236.20/27,698.15
  6. Step 6: Final answer
    x = 20,869.49

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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.