Home / 21,433.63-29,578.40-11,874.13

Finding the Fourth Proportional to 21,433.63, 29,578.40 and 11,874.13

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Solution

The fourth proportional to 21,433.63, 29,578.40 and 11,874.13 is: 16,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.63 : 29,578.40 = 11,874.13 : x
  2. Step 2: Convert to fraction form
    21,433.63/29,578.40 = 11,874.13/x
  3. Step 3: Cross multiply
    21,433.63x = 29,578.40 × 11,874.13
  4. Step 4: Simplify right side
    21,433.63x = 351,217,633.48
  5. Step 5: Solve for x
    x = 351,217,633.48/21,433.63
  6. Step 6: Final answer
    x = 16,386.29

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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.