Home / 21,275.52-31,912.92-8,802.24

Finding the Fourth Proportional to 21,275.52, 31,912.92 and 8,802.24

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Solution

The fourth proportional to 21,275.52, 31,912.92 and 8,802.24 is: 13,203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.52 : 31,912.92 = 8,802.24 : x
  2. Step 2: Convert to fraction form
    21,275.52/31,912.92 = 8,802.24/x
  3. Step 3: Cross multiply
    21,275.52x = 31,912.92 × 8,802.24
  4. Step 4: Simplify right side
    21,275.52x = 280,905,180.94
  5. Step 5: Solve for x
    x = 280,905,180.94/21,275.52
  6. Step 6: Final answer
    x = 13,203.21

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1.5x scale

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.