Home / 22,197.78-30,628.80-13,124.57

Finding the Fourth Proportional to 22,197.78, 30,628.80 and 13,124.57

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Solution

The fourth proportional to 22,197.78, 30,628.80 and 13,124.57 is: 18,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,197.78 : 30,628.80 = 13,124.57 : x
  2. Step 2: Convert to fraction form
    22,197.78/30,628.80 = 13,124.57/x
  3. Step 3: Cross multiply
    22,197.78x = 30,628.80 × 13,124.57
  4. Step 4: Simplify right side
    22,197.78x = 401,989,676.47
  5. Step 5: Solve for x
    x = 401,989,676.47/22,197.78
  6. Step 6: Final answer
    x = 18,109.45

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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.