Home / 22,861.20-31,551.36-12,790.20

Finding the Fourth Proportional to 22,861.20, 31,551.36 and 12,790.20

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Solution

The fourth proportional to 22,861.20, 31,551.36 and 12,790.20 is: 17,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,861.20 : 31,551.36 = 12,790.20 : x
  2. Step 2: Convert to fraction form
    22,861.20/31,551.36 = 12,790.20/x
  3. Step 3: Cross multiply
    22,861.20x = 31,551.36 × 12,790.20
  4. Step 4: Simplify right side
    22,861.20x = 403,548,204.67
  5. Step 5: Solve for x
    x = 403,548,204.67/22,861.20
  6. Step 6: Final answer
    x = 17,652.10

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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.