Home / 21,318.18-29,419.35-12,366.06

Finding the Fourth Proportional to 21,318.18, 29,419.35 and 12,366.06

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Solution

The fourth proportional to 21,318.18, 29,419.35 and 12,366.06 is: 17,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.18 : 29,419.35 = 12,366.06 : x
  2. Step 2: Convert to fraction form
    21,318.18/29,419.35 = 12,366.06/x
  3. Step 3: Cross multiply
    21,318.18x = 29,419.35 × 12,366.06
  4. Step 4: Simplify right side
    21,318.18x = 363,801,447.26
  5. Step 5: Solve for x
    x = 363,801,447.26/21,318.18
  6. Step 6: Final answer
    x = 17,065.31

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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.