Home / 30,618.77-42,250.64-17,191.50

Finding the Fourth Proportional to 30,618.77, 42,250.64 and 17,191.50

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Solution

The fourth proportional to 30,618.77, 42,250.64 and 17,191.50 is: 23,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.77 : 42,250.64 = 17,191.50 : x
  2. Step 2: Convert to fraction form
    30,618.77/42,250.64 = 17,191.50/x
  3. Step 3: Cross multiply
    30,618.77x = 42,250.64 × 17,191.50
  4. Step 4: Simplify right side
    30,618.77x = 726,351,791.60
  5. Step 5: Solve for x
    x = 726,351,791.60/30,618.77
  6. Step 6: Final answer
    x = 23,722.44

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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.