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Finding the Fourth Proportional to 14,808.40, 20,435.80 and 8,842.80

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Solution

The fourth proportional to 14,808.40, 20,435.80 and 8,842.80 is: 12,203.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,808.40 : 20,435.80 = 8,842.80 : x
  2. Step 2: Convert to fraction form
    14,808.40/20,435.80 = 8,842.80/x
  3. Step 3: Cross multiply
    14,808.40x = 20,435.80 × 8,842.80
  4. Step 4: Simplify right side
    14,808.40x = 180,709,692.24
  5. Step 5: Solve for x
    x = 180,709,692.24/14,808.40
  6. Step 6: Final answer
    x = 12,203.19

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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.