Home / 21,916.12-30,241.20-12,484.48

Finding the Fourth Proportional to 21,916.12, 30,241.20 and 12,484.48

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Solution

The fourth proportional to 21,916.12, 30,241.20 and 12,484.48 is: 17,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.12 : 30,241.20 = 12,484.48 : x
  2. Step 2: Convert to fraction form
    21,916.12/30,241.20 = 12,484.48/x
  3. Step 3: Cross multiply
    21,916.12x = 30,241.20 × 12,484.48
  4. Step 4: Simplify right side
    21,916.12x = 377,545,656.58
  5. Step 5: Solve for x
    x = 377,545,656.58/21,916.12
  6. Step 6: Final answer
    x = 17,226.85

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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.