Home / 27,918.24-38,527.20-15,342.72

Finding the Fourth Proportional to 27,918.24, 38,527.20 and 15,342.72

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Solution

The fourth proportional to 27,918.24, 38,527.20 and 15,342.72 is: 21,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.24 : 38,527.20 = 15,342.72 : x
  2. Step 2: Convert to fraction form
    27,918.24/38,527.20 = 15,342.72/x
  3. Step 3: Cross multiply
    27,918.24x = 38,527.20 × 15,342.72
  4. Step 4: Simplify right side
    27,918.24x = 591,112,041.98
  5. Step 5: Solve for x
    x = 591,112,041.98/27,918.24
  6. Step 6: Final answer
    x = 21,172.97

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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.