Home / 25,786.14-38,686.53-12,642.30

Finding the Fourth Proportional to 25,786.14, 38,686.53 and 12,642.30

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Solution

The fourth proportional to 25,786.14, 38,686.53 and 12,642.30 is: 18,967.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,786.14 : 38,686.53 = 12,642.30 : x
  2. Step 2: Convert to fraction form
    25,786.14/38,686.53 = 12,642.30/x
  3. Step 3: Cross multiply
    25,786.14x = 38,686.53 × 12,642.30
  4. Step 4: Simplify right side
    25,786.14x = 489,086,718.22
  5. Step 5: Solve for x
    x = 489,086,718.22/25,786.14
  6. Step 6: Final answer
    x = 18,967.04

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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.