Home / 25,479.09-35,151.53-18,780.68

Finding the Fourth Proportional to 25,479.09, 35,151.53 and 18,780.68

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Solution

The fourth proportional to 25,479.09, 35,151.53 and 18,780.68 is: 25,910.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,479.09 : 35,151.53 = 18,780.68 : x
  2. Step 2: Convert to fraction form
    25,479.09/35,151.53 = 18,780.68/x
  3. Step 3: Cross multiply
    25,479.09x = 35,151.53 × 18,780.68
  4. Step 4: Simplify right side
    25,479.09x = 660,169,630.42
  5. Step 5: Solve for x
    x = 660,169,630.42/25,479.09
  6. Step 6: Final answer
    x = 25,910.25

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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.