Home / 22,342.41-30,830.16-13,389.66

Finding the Fourth Proportional to 22,342.41, 30,830.16 and 13,389.66

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Solution

The fourth proportional to 22,342.41, 30,830.16 and 13,389.66 is: 18,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,342.41 : 30,830.16 = 13,389.66 : x
  2. Step 2: Convert to fraction form
    22,342.41/30,830.16 = 13,389.66/x
  3. Step 3: Cross multiply
    22,342.41x = 30,830.16 × 13,389.66
  4. Step 4: Simplify right side
    22,342.41x = 412,805,360.15
  5. Step 5: Solve for x
    x = 412,805,360.15/22,342.41
  6. Step 6: Final answer
    x = 18,476.31

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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.