Home / 13,108.29-18,089.34-7,139.94

Finding the Fourth Proportional to 13,108.29, 18,089.34 and 7,139.94

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Solution

The fourth proportional to 13,108.29, 18,089.34 and 7,139.94 is: 9,853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.29 : 18,089.34 = 7,139.94 : x
  2. Step 2: Convert to fraction form
    13,108.29/18,089.34 = 7,139.94/x
  3. Step 3: Cross multiply
    13,108.29x = 18,089.34 × 7,139.94
  4. Step 4: Simplify right side
    13,108.29x = 129,156,802.24
  5. Step 5: Solve for x
    x = 129,156,802.24/13,108.29
  6. Step 6: Final answer
    x = 9,853.06

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