Home / 21,340.16-29,449.28-11,908.70

Finding the Fourth Proportional to 21,340.16, 29,449.28 and 11,908.70

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Solution

The fourth proportional to 21,340.16, 29,449.28 and 11,908.70 is: 16,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.16 : 29,449.28 = 11,908.70 : x
  2. Step 2: Convert to fraction form
    21,340.16/29,449.28 = 11,908.70/x
  3. Step 3: Cross multiply
    21,340.16x = 29,449.28 × 11,908.70
  4. Step 4: Simplify right side
    21,340.16x = 350,702,640.74
  5. Step 5: Solve for x
    x = 350,702,640.74/21,340.16
  6. Step 6: Final answer
    x = 16,433.93

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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.