Home / 21,317.74-29,414.01-11,886.10

Finding the Fourth Proportional to 21,317.74, 29,414.01 and 11,886.10

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Solution

The fourth proportional to 21,317.74, 29,414.01 and 11,886.10 is: 16,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.74 : 29,414.01 = 11,886.10 : x
  2. Step 2: Convert to fraction form
    21,317.74/29,414.01 = 11,886.10/x
  3. Step 3: Cross multiply
    21,317.74x = 29,414.01 × 11,886.10
  4. Step 4: Simplify right side
    21,317.74x = 349,617,864.26
  5. Step 5: Solve for x
    x = 349,617,864.26/21,317.74
  6. Step 6: Final answer
    x = 16,400.32

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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.