Home / 27,711.06-38,240.70-15,135.90

Finding the Fourth Proportional to 27,711.06, 38,240.70 and 15,135.90

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Solution

The fourth proportional to 27,711.06, 38,240.70 and 15,135.90 is: 20,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,711.06 : 38,240.70 = 15,135.90 : x
  2. Step 2: Convert to fraction form
    27,711.06/38,240.70 = 15,135.90/x
  3. Step 3: Cross multiply
    27,711.06x = 38,240.70 × 15,135.90
  4. Step 4: Simplify right side
    27,711.06x = 578,807,411.13
  5. Step 5: Solve for x
    x = 578,807,411.13/27,711.06
  6. Step 6: Final answer
    x = 20,887.23

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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.