Home / 15,530.67-21,433.17-8,817.20

Finding the Fourth Proportional to 15,530.67, 21,433.17 and 8,817.20

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Solution

The fourth proportional to 15,530.67, 21,433.17 and 8,817.20 is: 12,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.67 : 21,433.17 = 8,817.20 : x
  2. Step 2: Convert to fraction form
    15,530.67/21,433.17 = 8,817.20/x
  3. Step 3: Cross multiply
    15,530.67x = 21,433.17 × 8,817.20
  4. Step 4: Simplify right side
    15,530.67x = 188,980,439.36
  5. Step 5: Solve for x
    x = 188,980,439.36/15,530.67
  6. Step 6: Final answer
    x = 12,168.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.