Home / 25,911.12-38,870.33-12,763.61

Finding the Fourth Proportional to 25,911.12, 38,870.33 and 12,763.61

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Solution

The fourth proportional to 25,911.12, 38,870.33 and 12,763.61 is: 19,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,911.12 : 38,870.33 = 12,763.61 : x
  2. Step 2: Convert to fraction form
    25,911.12/38,870.33 = 12,763.61/x
  3. Step 3: Cross multiply
    25,911.12x = 38,870.33 × 12,763.61
  4. Step 4: Simplify right side
    25,911.12x = 496,125,474.52
  5. Step 5: Solve for x
    x = 496,125,474.52/25,911.12
  6. Step 6: Final answer
    x = 19,147.20

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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.