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Finding the Fourth Proportional to 30,482.55, 45,692.64 and 20,622.87

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Solution

The fourth proportional to 30,482.55, 45,692.64 and 20,622.87 is: 30,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.55 : 45,692.64 = 20,622.87 : x
  2. Step 2: Convert to fraction form
    30,482.55/45,692.64 = 20,622.87/x
  3. Step 3: Cross multiply
    30,482.55x = 45,692.64 × 20,622.87
  4. Step 4: Simplify right side
    30,482.55x = 942,313,374.68
  5. Step 5: Solve for x
    x = 942,313,374.68/30,482.55
  6. Step 6: Final answer
    x = 30,913.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.