Home / 13,109.18-18,089.30-7,802.96

Finding the Fourth Proportional to 13,109.18, 18,089.30 and 7,802.96

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Solution

The fourth proportional to 13,109.18, 18,089.30 and 7,802.96 is: 10,767.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.18 : 18,089.30 = 7,802.96 : x
  2. Step 2: Convert to fraction form
    13,109.18/18,089.30 = 7,802.96/x
  3. Step 3: Cross multiply
    13,109.18x = 18,089.30 × 7,802.96
  4. Step 4: Simplify right side
    13,109.18x = 141,149,954.87
  5. Step 5: Solve for x
    x = 141,149,954.87/13,109.18
  6. Step 6: Final answer
    x = 10,767.26

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1.5x scale

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.