Home / 21,268.17-29,356.53-12,317.87

Finding the Fourth Proportional to 21,268.17, 29,356.53 and 12,317.87

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Solution

The fourth proportional to 21,268.17, 29,356.53 and 12,317.87 is: 17,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.17 : 29,356.53 = 12,317.87 : x
  2. Step 2: Convert to fraction form
    21,268.17/29,356.53 = 12,317.87/x
  3. Step 3: Cross multiply
    21,268.17x = 29,356.53 × 12,317.87
  4. Step 4: Simplify right side
    21,268.17x = 361,609,947.39
  5. Step 5: Solve for x
    x = 361,609,947.39/21,268.17
  6. Step 6: Final answer
    x = 17,002.40

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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.