Home / 21,285.65-31,928.38-6,494.52

Finding the Fourth Proportional to 21,285.65, 31,928.38 and 6,494.52

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Solution

The fourth proportional to 21,285.65, 31,928.38 and 6,494.52 is: 9,741.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.65 : 31,928.38 = 6,494.52 : x
  2. Step 2: Convert to fraction form
    21,285.65/31,928.38 = 6,494.52/x
  3. Step 3: Cross multiply
    21,285.65x = 31,928.38 × 6,494.52
  4. Step 4: Simplify right side
    21,285.65x = 207,359,502.48
  5. Step 5: Solve for x
    x = 207,359,502.48/21,285.65
  6. Step 6: Final answer
    x = 9,741.75

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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.