Home / 29,119.98-40,132.29-21,148.38

Finding the Fourth Proportional to 29,119.98, 40,132.29 and 21,148.38

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Solution

The fourth proportional to 29,119.98, 40,132.29 and 21,148.38 is: 29,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,119.98 : 40,132.29 = 21,148.38 : x
  2. Step 2: Convert to fraction form
    29,119.98/40,132.29 = 21,148.38/x
  3. Step 3: Cross multiply
    29,119.98x = 40,132.29 × 21,148.38
  4. Step 4: Simplify right side
    29,119.98x = 848,732,919.19
  5. Step 5: Solve for x
    x = 848,732,919.19/29,119.98
  6. Step 6: Final answer
    x = 29,146.07

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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.