Home / 21,434.58-29,578.47-11,874.42

Finding the Fourth Proportional to 21,434.58, 29,578.47 and 11,874.42

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Solution

The fourth proportional to 21,434.58, 29,578.47 and 11,874.42 is: 16,386.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.58 : 29,578.47 = 11,874.42 : x
  2. Step 2: Convert to fraction form
    21,434.58/29,578.47 = 11,874.42/x
  3. Step 3: Cross multiply
    21,434.58x = 29,578.47 × 11,874.42
  4. Step 4: Simplify right side
    21,434.58x = 351,227,175.74
  5. Step 5: Solve for x
    x = 351,227,175.74/21,434.58
  6. Step 6: Final answer
    x = 16,386.01

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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.