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Finding the Fourth Proportional to 14,803.45, 20,428.31 and 8,839.10

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Solution

The fourth proportional to 14,803.45, 20,428.31 and 8,839.10 is: 12,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,803.45 : 20,428.31 = 8,839.10 : x
  2. Step 2: Convert to fraction form
    14,803.45/20,428.31 = 8,839.10/x
  3. Step 3: Cross multiply
    14,803.45x = 20,428.31 × 8,839.10
  4. Step 4: Simplify right side
    14,803.45x = 180,567,948.09
  5. Step 5: Solve for x
    x = 180,567,948.09/14,803.45
  6. Step 6: Final answer
    x = 12,197.70

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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.