Home / 21,791.18-30,073.29-12,360.35

Finding the Fourth Proportional to 21,791.18, 30,073.29 and 12,360.35

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Solution

The fourth proportional to 21,791.18, 30,073.29 and 12,360.35 is: 17,058.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.18 : 30,073.29 = 12,360.35 : x
  2. Step 2: Convert to fraction form
    21,791.18/30,073.29 = 12,360.35/x
  3. Step 3: Cross multiply
    21,791.18x = 30,073.29 × 12,360.35
  4. Step 4: Simplify right side
    21,791.18x = 371,716,390.05
  5. Step 5: Solve for x
    x = 371,716,390.05/21,791.18
  6. Step 6: Final answer
    x = 17,058.11

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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.