Home / 25,729.86-38,559.87-10,920.21

Finding the Fourth Proportional to 25,729.86, 38,559.87 and 10,920.21

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Solution

The fourth proportional to 25,729.86, 38,559.87 and 10,920.21 is: 16,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,729.86 : 38,559.87 = 10,920.21 : x
  2. Step 2: Convert to fraction form
    25,729.86/38,559.87 = 10,920.21/x
  3. Step 3: Cross multiply
    25,729.86x = 38,559.87 × 10,920.21
  4. Step 4: Simplify right side
    25,729.86x = 421,081,877.97
  5. Step 5: Solve for x
    x = 421,081,877.97/25,729.86
  6. Step 6: Final answer
    x = 16,365.49

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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.