Home / 15,344.43-21,168.16-9,966.49

Finding the Fourth Proportional to 15,344.43, 21,168.16 and 9,966.49

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Solution

The fourth proportional to 15,344.43, 21,168.16 and 9,966.49 is: 13,749.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.43 : 21,168.16 = 9,966.49 : x
  2. Step 2: Convert to fraction form
    15,344.43/21,168.16 = 9,966.49/x
  3. Step 3: Cross multiply
    15,344.43x = 21,168.16 × 9,966.49
  4. Step 4: Simplify right side
    15,344.43x = 210,972,254.96
  5. Step 5: Solve for x
    x = 210,972,254.96/15,344.43
  6. Step 6: Final answer
    x = 13,749.11

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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.