Home / 28,062.86-38,680.31-19,875.84

Finding the Fourth Proportional to 28,062.86, 38,680.31 and 19,875.84

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Solution

The fourth proportional to 28,062.86, 38,680.31 and 19,875.84 is: 27,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.86 : 38,680.31 = 19,875.84 : x
  2. Step 2: Convert to fraction form
    28,062.86/38,680.31 = 19,875.84/x
  3. Step 3: Cross multiply
    28,062.86x = 38,680.31 × 19,875.84
  4. Step 4: Simplify right side
    28,062.86x = 768,803,553.33
  5. Step 5: Solve for x
    x = 768,803,553.33/28,062.86
  6. Step 6: Final answer
    x = 27,395.76

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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.