Home / 13,881.32-20,821.95-4,020.59

Finding the Fourth Proportional to 13,881.32, 20,821.95 and 4,020.59

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Solution

The fourth proportional to 13,881.32, 20,821.95 and 4,020.59 is: 6,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.32 : 20,821.95 = 4,020.59 : x
  2. Step 2: Convert to fraction form
    13,881.32/20,821.95 = 4,020.59/x
  3. Step 3: Cross multiply
    13,881.32x = 20,821.95 × 4,020.59
  4. Step 4: Simplify right side
    13,881.32x = 83,716,523.95
  5. Step 5: Solve for x
    x = 83,716,523.95/13,881.32
  6. Step 6: Final answer
    x = 6,030.88

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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.