Home / 15,536.05-21,431.33-9,247.21

Finding the Fourth Proportional to 15,536.05, 21,431.33 and 9,247.21

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Solution

The fourth proportional to 15,536.05, 21,431.33 and 9,247.21 is: 12,756.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,536.05 : 21,431.33 = 9,247.21 : x
  2. Step 2: Convert to fraction form
    15,536.05/21,431.33 = 9,247.21/x
  3. Step 3: Cross multiply
    15,536.05x = 21,431.33 × 9,247.21
  4. Step 4: Simplify right side
    15,536.05x = 198,179,962.85
  5. Step 5: Solve for x
    x = 198,179,962.85/15,536.05
  6. Step 6: Final answer
    x = 12,756.14

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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.