Home / 39,904.78-55,068.96-22,000.42

Finding the Fourth Proportional to 39,904.78, 55,068.96 and 22,000.42

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Solution

The fourth proportional to 39,904.78, 55,068.96 and 22,000.42 is: 30,360.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.78 : 55,068.96 = 22,000.42 : x
  2. Step 2: Convert to fraction form
    39,904.78/55,068.96 = 22,000.42/x
  3. Step 3: Cross multiply
    39,904.78x = 55,068.96 × 22,000.42
  4. Step 4: Simplify right side
    39,904.78x = 1,211,540,248.96
  5. Step 5: Solve for x
    x = 1,211,540,248.96/39,904.78
  6. Step 6: Final answer
    x = 30,360.78

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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.