Home / 27,954.72-38,577.36-15,378.72

Finding the Fourth Proportional to 27,954.72, 38,577.36 and 15,378.72

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Solution

The fourth proportional to 27,954.72, 38,577.36 and 15,378.72 is: 21,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,954.72 : 38,577.36 = 15,378.72 : x
  2. Step 2: Convert to fraction form
    27,954.72/38,577.36 = 15,378.72/x
  3. Step 3: Cross multiply
    27,954.72x = 38,577.36 × 15,378.72
  4. Step 4: Simplify right side
    27,954.72x = 593,270,417.78
  5. Step 5: Solve for x
    x = 593,270,417.78/27,954.72
  6. Step 6: Final answer
    x = 21,222.55

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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.