Home / 40,157.80-60,246.30-20,439.40

Finding the Fourth Proportional to 40,157.80, 60,246.30 and 20,439.40

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Solution

The fourth proportional to 40,157.80, 60,246.30 and 20,439.40 is: 30,663.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,157.80 : 60,246.30 = 20,439.40 : x
  2. Step 2: Convert to fraction form
    40,157.80/60,246.30 = 20,439.40/x
  3. Step 3: Cross multiply
    40,157.80x = 60,246.30 × 20,439.40
  4. Step 4: Simplify right side
    40,157.80x = 1,231,398,224.22
  5. Step 5: Solve for x
    x = 1,231,398,224.22/40,157.80
  6. Step 6: Final answer
    x = 30,663.99

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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.