Home / 21,305.24-29,401.38-12,228.21

Finding the Fourth Proportional to 21,305.24, 29,401.38 and 12,228.21

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Solution

The fourth proportional to 21,305.24, 29,401.38 and 12,228.21 is: 16,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.24 : 29,401.38 = 12,228.21 : x
  2. Step 2: Convert to fraction form
    21,305.24/29,401.38 = 12,228.21/x
  3. Step 3: Cross multiply
    21,305.24x = 29,401.38 × 12,228.21
  4. Step 4: Simplify right side
    21,305.24x = 359,526,248.93
  5. Step 5: Solve for x
    x = 359,526,248.93/21,305.24
  6. Step 6: Final answer
    x = 16,875.02

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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.