Home / 13,820.77-20,731.15-3,432.52

Finding the Fourth Proportional to 13,820.77, 20,731.15 and 3,432.52

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Solution

The fourth proportional to 13,820.77, 20,731.15 and 3,432.52 is: 5,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.77 : 20,731.15 = 3,432.52 : x
  2. Step 2: Convert to fraction form
    13,820.77/20,731.15 = 3,432.52/x
  3. Step 3: Cross multiply
    13,820.77x = 20,731.15 × 3,432.52
  4. Step 4: Simplify right side
    13,820.77x = 71,159,983.34
  5. Step 5: Solve for x
    x = 71,159,983.34/13,820.77
  6. Step 6: Final answer
    x = 5,148.77

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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.