Home / 39,925.78-55,097.92-22,021.40

Finding the Fourth Proportional to 39,925.78, 55,097.92 and 22,021.40

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Solution

The fourth proportional to 39,925.78, 55,097.92 and 22,021.40 is: 30,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,925.78 : 55,097.92 = 22,021.40 : x
  2. Step 2: Convert to fraction form
    39,925.78/55,097.92 = 22,021.40/x
  3. Step 3: Cross multiply
    39,925.78x = 55,097.92 × 22,021.40
  4. Step 4: Simplify right side
    39,925.78x = 1,213,333,500.76
  5. Step 5: Solve for x
    x = 1,213,333,500.76/39,925.78
  6. Step 6: Final answer
    x = 30,389.73

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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.