Home / 13,723.01-18,922.72-8,934.12

Finding the Fourth Proportional to 13,723.01, 18,922.72 and 8,934.12

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Solution

The fourth proportional to 13,723.01, 18,922.72 and 8,934.12 is: 12,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.01 : 18,922.72 = 8,934.12 : x
  2. Step 2: Convert to fraction form
    13,723.01/18,922.72 = 8,934.12/x
  3. Step 3: Cross multiply
    13,723.01x = 18,922.72 × 8,934.12
  4. Step 4: Simplify right side
    13,723.01x = 169,057,851.21
  5. Step 5: Solve for x
    x = 169,057,851.21/13,723.01
  6. Step 6: Final answer
    x = 12,319.30

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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.