Home / 15,844.12-21,906.62-13,875.80

Finding the Fourth Proportional to 15,844.12, 21,906.62 and 13,875.80

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Solution

The fourth proportional to 15,844.12, 21,906.62 and 13,875.80 is: 19,185.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.12 : 21,906.62 = 13,875.80 : x
  2. Step 2: Convert to fraction form
    15,844.12/21,906.62 = 13,875.80/x
  3. Step 3: Cross multiply
    15,844.12x = 21,906.62 × 13,875.80
  4. Step 4: Simplify right side
    15,844.12x = 303,971,877.80
  5. Step 5: Solve for x
    x = 303,971,877.80/15,844.12
  6. Step 6: Final answer
    x = 19,185.15

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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.