Home / 20,116.10-30,116.55-17,812.10

Finding the Fourth Proportional to 20,116.10, 30,116.55 and 17,812.10

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Solution

The fourth proportional to 20,116.10, 30,116.55 and 17,812.10 is: 26,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.10 : 30,116.55 = 17,812.10 : x
  2. Step 2: Convert to fraction form
    20,116.10/30,116.55 = 17,812.10/x
  3. Step 3: Cross multiply
    20,116.10x = 30,116.55 × 17,812.10
  4. Step 4: Simplify right side
    20,116.10x = 536,439,000.26
  5. Step 5: Solve for x
    x = 536,439,000.26/20,116.10
  6. Step 6: Final answer
    x = 26,667.15

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1.5x scale

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.