Home / 13,510.81-20,224.69-11,517.91

Finding the Fourth Proportional to 13,510.81, 20,224.69 and 11,517.91

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Solution

The fourth proportional to 13,510.81, 20,224.69 and 11,517.91 is: 17,241.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.81 : 20,224.69 = 11,517.91 : x
  2. Step 2: Convert to fraction form
    13,510.81/20,224.69 = 11,517.91/x
  3. Step 3: Cross multiply
    13,510.81x = 20,224.69 × 11,517.91
  4. Step 4: Simplify right side
    13,510.81x = 232,946,159.20
  5. Step 5: Solve for x
    x = 232,946,159.20/13,510.81
  6. Step 6: Final answer
    x = 17,241.47

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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.