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Finding the Fourth Proportional to 35,879.20, 53,809.20 and 12,503.20

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Solution

The fourth proportional to 35,879.20, 53,809.20 and 12,503.20 is: 18,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,879.20 : 53,809.20 = 12,503.20 : x
  2. Step 2: Convert to fraction form
    35,879.20/53,809.20 = 12,503.20/x
  3. Step 3: Cross multiply
    35,879.20x = 53,809.20 × 12,503.20
  4. Step 4: Simplify right side
    35,879.20x = 672,787,189.44
  5. Step 5: Solve for x
    x = 672,787,189.44/35,879.20
  6. Step 6: Final answer
    x = 18,751.45

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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.