Home / 20,753.76-28,650.78-14,074.68

Finding the Fourth Proportional to 20,753.76, 28,650.78 and 14,074.68

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Solution

The fourth proportional to 20,753.76, 28,650.78 and 14,074.68 is: 19,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.76 : 28,650.78 = 14,074.68 : x
  2. Step 2: Convert to fraction form
    20,753.76/28,650.78 = 14,074.68/x
  3. Step 3: Cross multiply
    20,753.76x = 28,650.78 × 14,074.68
  4. Step 4: Simplify right side
    20,753.76x = 403,250,560.25
  5. Step 5: Solve for x
    x = 403,250,560.25/20,753.76
  6. Step 6: Final answer
    x = 19,430.24

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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.