Home / 30,622.28-42,263.38-18,692.56

Finding the Fourth Proportional to 30,622.28, 42,263.38 and 18,692.56

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Solution

The fourth proportional to 30,622.28, 42,263.38 and 18,692.56 is: 25,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,622.28 : 42,263.38 = 18,692.56 : x
  2. Step 2: Convert to fraction form
    30,622.28/42,263.38 = 18,692.56/x
  3. Step 3: Cross multiply
    30,622.28x = 42,263.38 × 18,692.56
  4. Step 4: Simplify right side
    30,622.28x = 790,010,766.45
  5. Step 5: Solve for x
    x = 790,010,766.45/30,622.28
  6. Step 6: Final answer
    x = 25,798.56

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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.