Home / 21,756.74-32,628.20-13,424.28

Finding the Fourth Proportional to 21,756.74, 32,628.20 and 13,424.28

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Solution

The fourth proportional to 21,756.74, 32,628.20 and 13,424.28 is: 20,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.74 : 32,628.20 = 13,424.28 : x
  2. Step 2: Convert to fraction form
    21,756.74/32,628.20 = 13,424.28/x
  3. Step 3: Cross multiply
    21,756.74x = 32,628.20 × 13,424.28
  4. Step 4: Simplify right side
    21,756.74x = 438,010,092.70
  5. Step 5: Solve for x
    x = 438,010,092.70/21,756.74
  6. Step 6: Final answer
    x = 20,132.16

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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.