Home / 21,296.60-31,960.02-7,445.72

Finding the Fourth Proportional to 21,296.60, 31,960.02 and 7,445.72

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Solution

The fourth proportional to 21,296.60, 31,960.02 and 7,445.72 is: 11,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.60 : 31,960.02 = 7,445.72 : x
  2. Step 2: Convert to fraction form
    21,296.60/31,960.02 = 7,445.72/x
  3. Step 3: Cross multiply
    21,296.60x = 31,960.02 × 7,445.72
  4. Step 4: Simplify right side
    21,296.60x = 237,965,360.11
  5. Step 5: Solve for x
    x = 237,965,360.11/21,296.60
  6. Step 6: Final answer
    x = 11,173.87

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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.