Home / 27,065.40-37,350.12-15,128.70

Finding the Fourth Proportional to 27,065.40, 37,350.12 and 15,128.70

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Solution

The fourth proportional to 27,065.40, 37,350.12 and 15,128.70 is: 20,877.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,065.40 : 37,350.12 = 15,128.70 : x
  2. Step 2: Convert to fraction form
    27,065.40/37,350.12 = 15,128.70/x
  3. Step 3: Cross multiply
    27,065.40x = 37,350.12 × 15,128.70
  4. Step 4: Simplify right side
    27,065.40x = 565,058,760.44
  5. Step 5: Solve for x
    x = 565,058,760.44/27,065.40
  6. Step 6: Final answer
    x = 20,877.53

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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.