Home / 39,986.32-60,016.60-20,278.80

Finding the Fourth Proportional to 39,986.32, 60,016.60 and 20,278.80

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Solution

The fourth proportional to 39,986.32, 60,016.60 and 20,278.80 is: 30,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.32 : 60,016.60 = 20,278.80 : x
  2. Step 2: Convert to fraction form
    39,986.32/60,016.60 = 20,278.80/x
  3. Step 3: Cross multiply
    39,986.32x = 60,016.60 × 20,278.80
  4. Step 4: Simplify right side
    39,986.32x = 1,217,064,628.08
  5. Step 5: Solve for x
    x = 1,217,064,628.08/39,986.32
  6. Step 6: Final answer
    x = 30,437.03

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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.