Home / 30,278.08-41,760.08-19,671.13

Finding the Fourth Proportional to 30,278.08, 41,760.08 and 19,671.13

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Solution

The fourth proportional to 30,278.08, 41,760.08 and 19,671.13 is: 27,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.08 : 41,760.08 = 19,671.13 : x
  2. Step 2: Convert to fraction form
    30,278.08/41,760.08 = 19,671.13/x
  3. Step 3: Cross multiply
    30,278.08x = 41,760.08 × 19,671.13
  4. Step 4: Simplify right side
    30,278.08x = 821,467,962.49
  5. Step 5: Solve for x
    x = 821,467,962.49/30,278.08
  6. Step 6: Final answer
    x = 27,130.78

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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.