Home / 25,965.86-35,846.64-20,805.20

Finding the Fourth Proportional to 25,965.86, 35,846.64 and 20,805.20

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Solution

The fourth proportional to 25,965.86, 35,846.64 and 20,805.20 is: 28,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,965.86 : 35,846.64 = 20,805.20 : x
  2. Step 2: Convert to fraction form
    25,965.86/35,846.64 = 20,805.20/x
  3. Step 3: Cross multiply
    25,965.86x = 35,846.64 × 20,805.20
  4. Step 4: Simplify right side
    25,965.86x = 745,796,514.53
  5. Step 5: Solve for x
    x = 745,796,514.53/25,965.86
  6. Step 6: Final answer
    x = 28,722.20

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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.