Home / 21,837.33-30,135.51-12,405.89

Finding the Fourth Proportional to 21,837.33, 30,135.51 and 12,405.89

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Solution

The fourth proportional to 21,837.33, 30,135.51 and 12,405.89 is: 17,120.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.33 : 30,135.51 = 12,405.89 : x
  2. Step 2: Convert to fraction form
    21,837.33/30,135.51 = 12,405.89/x
  3. Step 3: Cross multiply
    21,837.33x = 30,135.51 × 12,405.89
  4. Step 4: Simplify right side
    21,837.33x = 373,857,671.48
  5. Step 5: Solve for x
    x = 373,857,671.48/21,837.33
  6. Step 6: Final answer
    x = 17,120.12

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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.