Home / 20,401.61-28,152.33-11,447.46

Finding the Fourth Proportional to 20,401.61, 28,152.33 and 11,447.46

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Solution

The fourth proportional to 20,401.61, 28,152.33 and 11,447.46 is: 15,796.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.61 : 28,152.33 = 11,447.46 : x
  2. Step 2: Convert to fraction form
    20,401.61/28,152.33 = 11,447.46/x
  3. Step 3: Cross multiply
    20,401.61x = 28,152.33 × 11,447.46
  4. Step 4: Simplify right side
    20,401.61x = 322,272,671.58
  5. Step 5: Solve for x
    x = 322,272,671.58/20,401.61
  6. Step 6: Final answer
    x = 15,796.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.