Home / 13,480.32-20,206.80-5,158.20

Finding the Fourth Proportional to 13,480.32, 20,206.80 and 5,158.20

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Solution

The fourth proportional to 13,480.32, 20,206.80 and 5,158.20 is: 7,732.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.32 : 20,206.80 = 5,158.20 : x
  2. Step 2: Convert to fraction form
    13,480.32/20,206.80 = 5,158.20/x
  3. Step 3: Cross multiply
    13,480.32x = 20,206.80 × 5,158.20
  4. Step 4: Simplify right side
    13,480.32x = 104,230,715.76
  5. Step 5: Solve for x
    x = 104,230,715.76/13,480.32
  6. Step 6: Final answer
    x = 7,732.07

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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.