Home / 22,009.77-30,390.93-20,330.55

Finding the Fourth Proportional to 22,009.77, 30,390.93 and 20,330.55

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Solution

The fourth proportional to 22,009.77, 30,390.93 and 20,330.55 is: 28,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009.77 : 30,390.93 = 20,330.55 : x
  2. Step 2: Convert to fraction form
    22,009.77/30,390.93 = 20,330.55/x
  3. Step 3: Cross multiply
    22,009.77x = 30,390.93 × 20,330.55
  4. Step 4: Simplify right side
    22,009.77x = 617,864,321.91
  5. Step 5: Solve for x
    x = 617,864,321.91/22,009.77
  6. Step 6: Final answer
    x = 28,072.28

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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.