Home / 27,888.12-38,474.65-15,945.05

Finding the Fourth Proportional to 27,888.12, 38,474.65 and 15,945.05

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Solution

The fourth proportional to 27,888.12, 38,474.65 and 15,945.05 is: 21,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.12 : 38,474.65 = 15,945.05 : x
  2. Step 2: Convert to fraction form
    27,888.12/38,474.65 = 15,945.05/x
  3. Step 3: Cross multiply
    27,888.12x = 38,474.65 × 15,945.05
  4. Step 4: Simplify right side
    27,888.12x = 613,480,025.61
  5. Step 5: Solve for x
    x = 613,480,025.61/27,888.12
  6. Step 6: Final answer
    x = 21,997.90

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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.