Home / 13,760.21-18,989.16-7,472.59

Finding the Fourth Proportional to 13,760.21, 18,989.16 and 7,472.59

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Solution

The fourth proportional to 13,760.21, 18,989.16 and 7,472.59 is: 10,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.21 : 18,989.16 = 7,472.59 : x
  2. Step 2: Convert to fraction form
    13,760.21/18,989.16 = 7,472.59/x
  3. Step 3: Cross multiply
    13,760.21x = 18,989.16 × 7,472.59
  4. Step 4: Simplify right side
    13,760.21x = 141,898,207.12
  5. Step 5: Solve for x
    x = 141,898,207.12/13,760.21
  6. Step 6: Final answer
    x = 10,312.21

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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.