Home / 22,115.15-30,466.99-15,389.23

Finding the Fourth Proportional to 22,115.15, 30,466.99 and 15,389.23

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Solution

The fourth proportional to 22,115.15, 30,466.99 and 15,389.23 is: 21,201.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.15 : 30,466.99 = 15,389.23 : x
  2. Step 2: Convert to fraction form
    22,115.15/30,466.99 = 15,389.23/x
  3. Step 3: Cross multiply
    22,115.15x = 30,466.99 × 15,389.23
  4. Step 4: Simplify right side
    22,115.15x = 468,863,516.52
  5. Step 5: Solve for x
    x = 468,863,516.52/22,115.15
  6. Step 6: Final answer
    x = 21,201.01

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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.