Home / 25,417.70-38,139.55-12,105.75

Finding the Fourth Proportional to 25,417.70, 38,139.55 and 12,105.75

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Solution

The fourth proportional to 25,417.70, 38,139.55 and 12,105.75 is: 18,164.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,417.70 : 38,139.55 = 12,105.75 : x
  2. Step 2: Convert to fraction form
    25,417.70/38,139.55 = 12,105.75/x
  3. Step 3: Cross multiply
    25,417.70x = 38,139.55 × 12,105.75
  4. Step 4: Simplify right side
    25,417.70x = 461,707,827.15
  5. Step 5: Solve for x
    x = 461,707,827.15/25,417.70
  6. Step 6: Final answer
    x = 18,164.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.