Home / 22,200.89-30,629.41-12,639.51

Finding the Fourth Proportional to 22,200.89, 30,629.41 and 12,639.51

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Solution

The fourth proportional to 22,200.89, 30,629.41 and 12,639.51 is: 17,438.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.89 : 30,629.41 = 12,639.51 : x
  2. Step 2: Convert to fraction form
    22,200.89/30,629.41 = 12,639.51/x
  3. Step 3: Cross multiply
    22,200.89x = 30,629.41 × 12,639.51
  4. Step 4: Simplify right side
    22,200.89x = 387,140,702.39
  5. Step 5: Solve for x
    x = 387,140,702.39/22,200.89
  6. Step 6: Final answer
    x = 17,438.08

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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.