Home / 21,278.35-31,917.06-5,695.98

Finding the Fourth Proportional to 21,278.35, 31,917.06 and 5,695.98

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Solution

The fourth proportional to 21,278.35, 31,917.06 and 5,695.98 is: 8,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.35 : 31,917.06 = 5,695.98 : x
  2. Step 2: Convert to fraction form
    21,278.35/31,917.06 = 5,695.98/x
  3. Step 3: Cross multiply
    21,278.35x = 31,917.06 × 5,695.98
  4. Step 4: Simplify right side
    21,278.35x = 181,798,935.42
  5. Step 5: Solve for x
    x = 181,798,935.42/21,278.35
  6. Step 6: Final answer
    x = 8,543.85

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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.