Home / 20,230.39-27,899.76-12,677.55

Finding the Fourth Proportional to 20,230.39, 27,899.76 and 12,677.55

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Solution

The fourth proportional to 20,230.39, 27,899.76 and 12,677.55 is: 17,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.39 : 27,899.76 = 12,677.55 : x
  2. Step 2: Convert to fraction form
    20,230.39/27,899.76 = 12,677.55/x
  3. Step 3: Cross multiply
    20,230.39x = 27,899.76 × 12,677.55
  4. Step 4: Simplify right side
    20,230.39x = 353,700,602.39
  5. Step 5: Solve for x
    x = 353,700,602.39/20,230.39
  6. Step 6: Final answer
    x = 17,483.63

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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.