Home / 28,162.73-38,864.22-15,415.86

Finding the Fourth Proportional to 28,162.73, 38,864.22 and 15,415.86

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Solution

The fourth proportional to 28,162.73, 38,864.22 and 15,415.86 is: 21,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.73 : 38,864.22 = 15,415.86 : x
  2. Step 2: Convert to fraction form
    28,162.73/38,864.22 = 15,415.86/x
  3. Step 3: Cross multiply
    28,162.73x = 38,864.22 × 15,415.86
  4. Step 4: Simplify right side
    28,162.73x = 599,125,462.46
  5. Step 5: Solve for x
    x = 599,125,462.46/28,162.73
  6. Step 6: Final answer
    x = 21,273.70

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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.