Home / 25,581.30-38,320.86-20,325.21

Finding the Fourth Proportional to 25,581.30, 38,320.86 and 20,325.21

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Solution

The fourth proportional to 25,581.30, 38,320.86 and 20,325.21 is: 30,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,581.30 : 38,320.86 = 20,325.21 : x
  2. Step 2: Convert to fraction form
    25,581.30/38,320.86 = 20,325.21/x
  3. Step 3: Cross multiply
    25,581.30x = 38,320.86 × 20,325.21
  4. Step 4: Simplify right side
    25,581.30x = 778,879,526.88
  5. Step 5: Solve for x
    x = 778,879,526.88/25,581.30
  6. Step 6: Final answer
    x = 30,447.22

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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.