Home / 20,400.74-30,597.58-5,407.96

Finding the Fourth Proportional to 20,400.74, 30,597.58 and 5,407.96

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Solution

The fourth proportional to 20,400.74, 30,597.58 and 5,407.96 is: 8,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.74 : 30,597.58 = 5,407.96 : x
  2. Step 2: Convert to fraction form
    20,400.74/30,597.58 = 5,407.96/x
  3. Step 3: Cross multiply
    20,400.74x = 30,597.58 × 5,407.96
  4. Step 4: Simplify right side
    20,400.74x = 165,470,363.75
  5. Step 5: Solve for x
    x = 165,470,363.75/20,400.74
  6. Step 6: Final answer
    x = 8,111.00

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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.