Home / 20,408.16-28,100.64-17,875.68

Finding the Fourth Proportional to 20,408.16, 28,100.64 and 17,875.68

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Solution

The fourth proportional to 20,408.16, 28,100.64 and 17,875.68 is: 24,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.16 : 28,100.64 = 17,875.68 : x
  2. Step 2: Convert to fraction form
    20,408.16/28,100.64 = 17,875.68/x
  3. Step 3: Cross multiply
    20,408.16x = 28,100.64 × 17,875.68
  4. Step 4: Simplify right side
    20,408.16x = 502,318,048.44
  5. Step 5: Solve for x
    x = 502,318,048.44/20,408.16
  6. Step 6: Final answer
    x = 24,613.59

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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.