Home / 21,319.47-31,979.34-6,527.25

Finding the Fourth Proportional to 21,319.47, 31,979.34 and 6,527.25

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Solution

The fourth proportional to 21,319.47, 31,979.34 and 6,527.25 is: 9,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.47 : 31,979.34 = 6,527.25 : x
  2. Step 2: Convert to fraction form
    21,319.47/31,979.34 = 6,527.25/x
  3. Step 3: Cross multiply
    21,319.47x = 31,979.34 × 6,527.25
  4. Step 4: Simplify right side
    21,319.47x = 208,737,147.02
  5. Step 5: Solve for x
    x = 208,737,147.02/21,319.47
  6. Step 6: Final answer
    x = 9,790.92

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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.