Home / 21,974.02-30,316.62-12,412.78

Finding the Fourth Proportional to 21,974.02, 30,316.62 and 12,412.78

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Solution

The fourth proportional to 21,974.02, 30,316.62 and 12,412.78 is: 17,125.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.02 : 30,316.62 = 12,412.78 : x
  2. Step 2: Convert to fraction form
    21,974.02/30,316.62 = 12,412.78/x
  3. Step 3: Cross multiply
    21,974.02x = 30,316.62 × 12,412.78
  4. Step 4: Simplify right side
    21,974.02x = 376,313,534.40
  5. Step 5: Solve for x
    x = 376,313,534.40/21,974.02
  6. Step 6: Final answer
    x = 17,125.38

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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.