Home / 22,115.68-30,513.36-12,683.68

Finding the Fourth Proportional to 22,115.68, 30,513.36 and 12,683.68

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Solution

The fourth proportional to 22,115.68, 30,513.36 and 12,683.68 is: 17,499.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.68 : 30,513.36 = 12,683.68 : x
  2. Step 2: Convert to fraction form
    22,115.68/30,513.36 = 12,683.68/x
  3. Step 3: Cross multiply
    22,115.68x = 30,513.36 × 12,683.68
  4. Step 4: Simplify right side
    22,115.68x = 387,021,693.96
  5. Step 5: Solve for x
    x = 387,021,693.96/22,115.68
  6. Step 6: Final answer
    x = 17,499.88

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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.