Home / 21,317.75-29,419.29-11,888.13

Finding the Fourth Proportional to 21,317.75, 29,419.29 and 11,888.13

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Solution

The fourth proportional to 21,317.75, 29,419.29 and 11,888.13 is: 16,406.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.75 : 29,419.29 = 11,888.13 : x
  2. Step 2: Convert to fraction form
    21,317.75/29,419.29 = 11,888.13/x
  3. Step 3: Cross multiply
    21,317.75x = 29,419.29 × 11,888.13
  4. Step 4: Simplify right side
    21,317.75x = 349,740,344.03
  5. Step 5: Solve for x
    x = 349,740,344.03/21,317.75
  6. Step 6: Final answer
    x = 16,406.06

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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.