Home / 21,007.95-31,502.70-6,218.02

Finding the Fourth Proportional to 21,007.95, 31,502.70 and 6,218.02

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Solution

The fourth proportional to 21,007.95, 31,502.70 and 6,218.02 is: 9,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.95 : 31,502.70 = 6,218.02 : x
  2. Step 2: Convert to fraction form
    21,007.95/31,502.70 = 6,218.02/x
  3. Step 3: Cross multiply
    21,007.95x = 31,502.70 × 6,218.02
  4. Step 4: Simplify right side
    21,007.95x = 195,884,418.65
  5. Step 5: Solve for x
    x = 195,884,418.65/21,007.95
  6. Step 6: Final answer
    x = 9,324.30

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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.