Home / 28,472.45-42,708.80-18,673.76

Finding the Fourth Proportional to 28,472.45, 42,708.80 and 18,673.76

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Solution

The fourth proportional to 28,472.45, 42,708.80 and 18,673.76 is: 28,010.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.45 : 42,708.80 = 18,673.76 : x
  2. Step 2: Convert to fraction form
    28,472.45/42,708.80 = 18,673.76/x
  3. Step 3: Cross multiply
    28,472.45x = 42,708.80 × 18,673.76
  4. Step 4: Simplify right side
    28,472.45x = 797,534,034.54
  5. Step 5: Solve for x
    x = 797,534,034.54/28,472.45
  6. Step 6: Final answer
    x = 28,010.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.