Home / 53,211.20-79,816.80-18,190.40

Finding the Fourth Proportional to 53,211.20, 79,816.80 and 18,190.40

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Solution

The fourth proportional to 53,211.20, 79,816.80 and 18,190.40 is: 27,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,211.20 : 79,816.80 = 18,190.40 : x
  2. Step 2: Convert to fraction form
    53,211.20/79,816.80 = 18,190.40/x
  3. Step 3: Cross multiply
    53,211.20x = 79,816.80 × 18,190.40
  4. Step 4: Simplify right side
    53,211.20x = 1,451,899,518.72
  5. Step 5: Solve for x
    x = 1,451,899,518.72/53,211.20
  6. Step 6: Final answer
    x = 27,285.60

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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.