Home / 21,367.42-29,457.39-18,414.70

Finding the Fourth Proportional to 21,367.42, 29,457.39 and 18,414.70

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Solution

The fourth proportional to 21,367.42, 29,457.39 and 18,414.70 is: 25,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.42 : 29,457.39 = 18,414.70 : x
  2. Step 2: Convert to fraction form
    21,367.42/29,457.39 = 18,414.70/x
  3. Step 3: Cross multiply
    21,367.42x = 29,457.39 × 18,414.70
  4. Step 4: Simplify right side
    21,367.42x = 542,448,999.63
  5. Step 5: Solve for x
    x = 542,448,999.63/21,367.42
  6. Step 6: Final answer
    x = 25,386.73

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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.