Home / 13,423.71-20,116.85-11,439.03

Finding the Fourth Proportional to 13,423.71, 20,116.85 and 11,439.03

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Solution

The fourth proportional to 13,423.71, 20,116.85 and 11,439.03 is: 17,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.71 : 20,116.85 = 11,439.03 : x
  2. Step 2: Convert to fraction form
    13,423.71/20,116.85 = 11,439.03/x
  3. Step 3: Cross multiply
    13,423.71x = 20,116.85 × 11,439.03
  4. Step 4: Simplify right side
    13,423.71x = 230,117,193.46
  5. Step 5: Solve for x
    x = 230,117,193.46/13,423.71
  6. Step 6: Final answer
    x = 17,142.59

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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.