Home / 57,921.93-86,890.05-20,474.28

Finding the Fourth Proportional to 57,921.93, 86,890.05 and 20,474.28

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Solution

The fourth proportional to 57,921.93, 86,890.05 and 20,474.28 is: 30,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,921.93 : 86,890.05 = 20,474.28 : x
  2. Step 2: Convert to fraction form
    57,921.93/86,890.05 = 20,474.28/x
  3. Step 3: Cross multiply
    57,921.93x = 86,890.05 × 20,474.28
  4. Step 4: Simplify right side
    57,921.93x = 1,779,011,212.91
  5. Step 5: Solve for x
    x = 1,779,011,212.91/57,921.93
  6. Step 6: Final answer
    x = 30,713.95

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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.