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Finding the Fourth Proportional to 14,810.40, 20,426.80 and 8,840.80

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Solution

The fourth proportional to 14,810.40, 20,426.80 and 8,840.80 is: 12,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,810.40 : 20,426.80 = 8,840.80 : x
  2. Step 2: Convert to fraction form
    14,810.40/20,426.80 = 8,840.80/x
  3. Step 3: Cross multiply
    14,810.40x = 20,426.80 × 8,840.80
  4. Step 4: Simplify right side
    14,810.40x = 180,589,253.44
  5. Step 5: Solve for x
    x = 180,589,253.44/14,810.40
  6. Step 6: Final answer
    x = 12,193.41

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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.