Home / 28,256.48-42,414.24-20,869.28

Finding the Fourth Proportional to 28,256.48, 42,414.24 and 20,869.28

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Solution

The fourth proportional to 28,256.48, 42,414.24 and 20,869.28 is: 31,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.48 : 42,414.24 = 20,869.28 : x
  2. Step 2: Convert to fraction form
    28,256.48/42,414.24 = 20,869.28/x
  3. Step 3: Cross multiply
    28,256.48x = 42,414.24 × 20,869.28
  4. Step 4: Simplify right side
    28,256.48x = 885,154,650.55
  5. Step 5: Solve for x
    x = 885,154,650.55/28,256.48
  6. Step 6: Final answer
    x = 31,325.72

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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.