Home / 20,974.61-28,945.69-12,023.84

Finding the Fourth Proportional to 20,974.61, 28,945.69 and 12,023.84

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Solution

The fourth proportional to 20,974.61, 28,945.69 and 12,023.84 is: 16,593.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.61 : 28,945.69 = 12,023.84 : x
  2. Step 2: Convert to fraction form
    20,974.61/28,945.69 = 12,023.84/x
  3. Step 3: Cross multiply
    20,974.61x = 28,945.69 × 12,023.84
  4. Step 4: Simplify right side
    20,974.61x = 348,038,387.55
  5. Step 5: Solve for x
    x = 348,038,387.55/20,974.61
  6. Step 6: Final answer
    x = 16,593.32

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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.