Home / 39,739.78-59,637.68-18,680.78

Finding the Fourth Proportional to 39,739.78, 59,637.68 and 18,680.78

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Solution

The fourth proportional to 39,739.78, 59,637.68 and 18,680.78 is: 28,034.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.78 : 59,637.68 = 18,680.78 : x
  2. Step 2: Convert to fraction form
    39,739.78/59,637.68 = 18,680.78/x
  3. Step 3: Cross multiply
    39,739.78x = 59,637.68 × 18,680.78
  4. Step 4: Simplify right side
    39,739.78x = 1,114,078,286.39
  5. Step 5: Solve for x
    x = 1,114,078,286.39/39,739.78
  6. Step 6: Final answer
    x = 28,034.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.