Home / 22,390.27-30,899.30-12,319.44

Finding the Fourth Proportional to 22,390.27, 30,899.30 and 12,319.44

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Solution

The fourth proportional to 22,390.27, 30,899.30 and 12,319.44 is: 17,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.27 : 30,899.30 = 12,319.44 : x
  2. Step 2: Convert to fraction form
    22,390.27/30,899.30 = 12,319.44/x
  3. Step 3: Cross multiply
    22,390.27x = 30,899.30 × 12,319.44
  4. Step 4: Simplify right side
    22,390.27x = 380,662,072.39
  5. Step 5: Solve for x
    x = 380,662,072.39/22,390.27
  6. Step 6: Final answer
    x = 17,001.23

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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.