Home / 13,621.74-20,430.15-3,758.58

Finding the Fourth Proportional to 13,621.74, 20,430.15 and 3,758.58

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Solution

The fourth proportional to 13,621.74, 20,430.15 and 3,758.58 is: 5,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.74 : 20,430.15 = 3,758.58 : x
  2. Step 2: Convert to fraction form
    13,621.74/20,430.15 = 3,758.58/x
  3. Step 3: Cross multiply
    13,621.74x = 20,430.15 × 3,758.58
  4. Step 4: Simplify right side
    13,621.74x = 76,788,353.19
  5. Step 5: Solve for x
    x = 76,788,353.19/13,621.74
  6. Step 6: Final answer
    x = 5,637.19

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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.