Home / 20,447.76-28,217.28-11,495.04

Finding the Fourth Proportional to 20,447.76, 28,217.28 and 11,495.04

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Solution

The fourth proportional to 20,447.76, 28,217.28 and 11,495.04 is: 15,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.76 : 28,217.28 = 11,495.04 : x
  2. Step 2: Convert to fraction form
    20,447.76/28,217.28 = 11,495.04/x
  3. Step 3: Cross multiply
    20,447.76x = 28,217.28 × 11,495.04
  4. Step 4: Simplify right side
    20,447.76x = 324,358,762.29
  5. Step 5: Solve for x
    x = 324,358,762.29/20,447.76
  6. Step 6: Final answer
    x = 15,862.80

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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.