Home / 30,684.80-42,345.54-20,074.44

Finding the Fourth Proportional to 30,684.80, 42,345.54 and 20,074.44

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Solution

The fourth proportional to 30,684.80, 42,345.54 and 20,074.44 is: 27,703.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,684.80 : 42,345.54 = 20,074.44 : x
  2. Step 2: Convert to fraction form
    30,684.80/42,345.54 = 20,074.44/x
  3. Step 3: Cross multiply
    30,684.80x = 42,345.54 × 20,074.44
  4. Step 4: Simplify right side
    30,684.80x = 850,063,002.00
  5. Step 5: Solve for x
    x = 850,063,002.00/30,684.80
  6. Step 6: Final answer
    x = 27,703.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.