Home / 21,820.59-30,110.13-12,387.33

Finding the Fourth Proportional to 21,820.59, 30,110.13 and 12,387.33

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Solution

The fourth proportional to 21,820.59, 30,110.13 and 12,387.33 is: 17,093.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.59 : 30,110.13 = 12,387.33 : x
  2. Step 2: Convert to fraction form
    21,820.59/30,110.13 = 12,387.33/x
  3. Step 3: Cross multiply
    21,820.59x = 30,110.13 × 12,387.33
  4. Step 4: Simplify right side
    21,820.59x = 372,984,116.65
  5. Step 5: Solve for x
    x = 372,984,116.65/21,820.59
  6. Step 6: Final answer
    x = 17,093.22

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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.