Home / 28,055.88-38,717.24-15,309.20

Finding the Fourth Proportional to 28,055.88, 38,717.24 and 15,309.20

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Solution

The fourth proportional to 28,055.88, 38,717.24 and 15,309.20 is: 21,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.88 : 38,717.24 = 15,309.20 : x
  2. Step 2: Convert to fraction form
    28,055.88/38,717.24 = 15,309.20/x
  3. Step 3: Cross multiply
    28,055.88x = 38,717.24 × 15,309.20
  4. Step 4: Simplify right side
    28,055.88x = 592,729,970.61
  5. Step 5: Solve for x
    x = 592,729,970.61/28,055.88
  6. Step 6: Final answer
    x = 21,126.76

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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.