Home / 22,939.12-31,674.66-18,690.88

Finding the Fourth Proportional to 22,939.12, 31,674.66 and 18,690.88

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Solution

The fourth proportional to 22,939.12, 31,674.66 and 18,690.88 is: 25,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,939.12 : 31,674.66 = 18,690.88 : x
  2. Step 2: Convert to fraction form
    22,939.12/31,674.66 = 18,690.88/x
  3. Step 3: Cross multiply
    22,939.12x = 31,674.66 × 18,690.88
  4. Step 4: Simplify right side
    22,939.12x = 592,027,269.10
  5. Step 5: Solve for x
    x = 592,027,269.10/22,939.12
  6. Step 6: Final answer
    x = 25,808.63

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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.