Home / 28,186.06-38,897.34-15,439.79

Finding the Fourth Proportional to 28,186.06, 38,897.34 and 15,439.79

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Solution

The fourth proportional to 28,186.06, 38,897.34 and 15,439.79 is: 21,307.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.06 : 38,897.34 = 15,439.79 : x
  2. Step 2: Convert to fraction form
    28,186.06/38,897.34 = 15,439.79/x
  3. Step 3: Cross multiply
    28,186.06x = 38,897.34 × 15,439.79
  4. Step 4: Simplify right side
    28,186.06x = 600,566,761.16
  5. Step 5: Solve for x
    x = 600,566,761.16/28,186.06
  6. Step 6: Final answer
    x = 21,307.23

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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.