Home / 22,331.20-33,496.80-20,430.40

Finding the Fourth Proportional to 22,331.20, 33,496.80 and 20,430.40

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Solution

The fourth proportional to 22,331.20, 33,496.80 and 20,430.40 is: 30,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,331.20 : 33,496.80 = 20,430.40 : x
  2. Step 2: Convert to fraction form
    22,331.20/33,496.80 = 20,430.40/x
  3. Step 3: Cross multiply
    22,331.20x = 33,496.80 × 20,430.40
  4. Step 4: Simplify right side
    22,331.20x = 684,353,022.72
  5. Step 5: Solve for x
    x = 684,353,022.72/22,331.20
  6. Step 6: Final answer
    x = 30,645.60

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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.