Home / 20,261.48-30,401.28-12,863.93

Finding the Fourth Proportional to 20,261.48, 30,401.28 and 12,863.93

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Solution

The fourth proportional to 20,261.48, 30,401.28 and 12,863.93 is: 19,301.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.48 : 30,401.28 = 12,863.93 : x
  2. Step 2: Convert to fraction form
    20,261.48/30,401.28 = 12,863.93/x
  3. Step 3: Cross multiply
    20,261.48x = 30,401.28 × 12,863.93
  4. Step 4: Simplify right side
    20,261.48x = 391,079,785.82
  5. Step 5: Solve for x
    x = 391,079,785.82/20,261.48
  6. Step 6: Final answer
    x = 19,301.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.