Home / 15,335.38-21,163.16-9,370.34

Finding the Fourth Proportional to 15,335.38, 21,163.16 and 9,370.34

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Solution

The fourth proportional to 15,335.38, 21,163.16 and 9,370.34 is: 12,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.38 : 21,163.16 = 9,370.34 : x
  2. Step 2: Convert to fraction form
    15,335.38/21,163.16 = 9,370.34/x
  3. Step 3: Cross multiply
    15,335.38x = 21,163.16 × 9,370.34
  4. Step 4: Simplify right side
    15,335.38x = 198,305,922.28
  5. Step 5: Solve for x
    x = 198,305,922.28/15,335.38
  6. Step 6: Final answer
    x = 12,931.27

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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.