Home / 21,254.40-31,889.48-8,775.52

Finding the Fourth Proportional to 21,254.40, 31,889.48 and 8,775.52

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Solution

The fourth proportional to 21,254.40, 31,889.48 and 8,775.52 is: 13,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.40 : 31,889.48 = 8,775.52 : x
  2. Step 2: Convert to fraction form
    21,254.40/31,889.48 = 8,775.52/x
  3. Step 3: Cross multiply
    21,254.40x = 31,889.48 × 8,775.52
  4. Step 4: Simplify right side
    21,254.40x = 279,846,769.53
  5. Step 5: Solve for x
    x = 279,846,769.53/21,254.40
  6. Step 6: Final answer
    x = 13,166.53

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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.