Home / 21,332.56-31,999.30-6,541.15

Finding the Fourth Proportional to 21,332.56, 31,999.30 and 6,541.15

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Solution

The fourth proportional to 21,332.56, 31,999.30 and 6,541.15 is: 9,811.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.56 : 31,999.30 = 6,541.15 : x
  2. Step 2: Convert to fraction form
    21,332.56/31,999.30 = 6,541.15/x
  3. Step 3: Cross multiply
    21,332.56x = 31,999.30 × 6,541.15
  4. Step 4: Simplify right side
    21,332.56x = 209,312,281.64
  5. Step 5: Solve for x
    x = 209,312,281.64/21,332.56
  6. Step 6: Final answer
    x = 9,811.87

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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.