Home / 30,622.48-42,263.64-18,692.72

Finding the Fourth Proportional to 30,622.48, 42,263.64 and 18,692.72

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Solution

The fourth proportional to 30,622.48, 42,263.64 and 18,692.72 is: 25,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,622.48 : 42,263.64 = 18,692.72 : x
  2. Step 2: Convert to fraction form
    30,622.48/42,263.64 = 18,692.72/x
  3. Step 3: Cross multiply
    30,622.48x = 42,263.64 × 18,692.72
  4. Step 4: Simplify right side
    30,622.48x = 790,022,388.70
  5. Step 5: Solve for x
    x = 790,022,388.70/30,622.48
  6. Step 6: Final answer
    x = 25,798.77

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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.