Home / 30,991.95-42,772.77-17,567.55

Finding the Fourth Proportional to 30,991.95, 42,772.77 and 17,567.55

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Solution

The fourth proportional to 30,991.95, 42,772.77 and 17,567.55 is: 24,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991.95 : 42,772.77 = 17,567.55 : x
  2. Step 2: Convert to fraction form
    30,991.95/42,772.77 = 17,567.55/x
  3. Step 3: Cross multiply
    30,991.95x = 42,772.77 × 17,567.55
  4. Step 4: Simplify right side
    30,991.95x = 751,412,775.61
  5. Step 5: Solve for x
    x = 751,412,775.61/30,991.95
  6. Step 6: Final answer
    x = 24,245.42

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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.