Home / 21,200.76-31,817.52-11,348.28

Finding the Fourth Proportional to 21,200.76, 31,817.52 and 11,348.28

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Solution

The fourth proportional to 21,200.76, 31,817.52 and 11,348.28 is: 17,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.76 : 31,817.52 = 11,348.28 : x
  2. Step 2: Convert to fraction form
    21,200.76/31,817.52 = 11,348.28/x
  3. Step 3: Cross multiply
    21,200.76x = 31,817.52 × 11,348.28
  4. Step 4: Simplify right side
    21,200.76x = 361,074,125.87
  5. Step 5: Solve for x
    x = 361,074,125.87/21,200.76
  6. Step 6: Final answer
    x = 17,031.19

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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.