Home / 21,292.68-29,377.39-12,338.45

Finding the Fourth Proportional to 21,292.68, 29,377.39 and 12,338.45

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Solution

The fourth proportional to 21,292.68, 29,377.39 and 12,338.45 is: 17,023.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.68 : 29,377.39 = 12,338.45 : x
  2. Step 2: Convert to fraction form
    21,292.68/29,377.39 = 12,338.45/x
  3. Step 3: Cross multiply
    21,292.68x = 29,377.39 × 12,338.45
  4. Step 4: Simplify right side
    21,292.68x = 362,471,457.65
  5. Step 5: Solve for x
    x = 362,471,457.65/21,292.68
  6. Step 6: Final answer
    x = 17,023.29

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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.