Home / 15,350.90-21,184.03-8,636.53

Finding the Fourth Proportional to 15,350.90, 21,184.03 and 8,636.53

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Solution

The fourth proportional to 15,350.90, 21,184.03 and 8,636.53 is: 11,918.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.90 : 21,184.03 = 8,636.53 : x
  2. Step 2: Convert to fraction form
    15,350.90/21,184.03 = 8,636.53/x
  3. Step 3: Cross multiply
    15,350.90x = 21,184.03 × 8,636.53
  4. Step 4: Simplify right side
    15,350.90x = 182,956,510.62
  5. Step 5: Solve for x
    x = 182,956,510.62/15,350.90
  6. Step 6: Final answer
    x = 11,918.29

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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.