Home / 27,876.78-38,470.23-15,130.07

Finding the Fourth Proportional to 27,876.78, 38,470.23 and 15,130.07

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Solution

The fourth proportional to 27,876.78, 38,470.23 and 15,130.07 is: 20,879.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.78 : 38,470.23 = 15,130.07 : x
  2. Step 2: Convert to fraction form
    27,876.78/38,470.23 = 15,130.07/x
  3. Step 3: Cross multiply
    27,876.78x = 38,470.23 × 15,130.07
  4. Step 4: Simplify right side
    27,876.78x = 582,057,080.46
  5. Step 5: Solve for x
    x = 582,057,080.46/27,876.78
  6. Step 6: Final answer
    x = 20,879.64

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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.