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Finding the Fourth Proportional to 16,486.40, 24,715.20 and 9,905.60

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Solution

The fourth proportional to 16,486.40, 24,715.20 and 9,905.60 is: 14,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,486.40 : 24,715.20 = 9,905.60 : x
  2. Step 2: Convert to fraction form
    16,486.40/24,715.20 = 9,905.60/x
  3. Step 3: Cross multiply
    16,486.40x = 24,715.20 × 9,905.60
  4. Step 4: Simplify right side
    16,486.40x = 244,818,885.12
  5. Step 5: Solve for x
    x = 244,818,885.12/16,486.40
  6. Step 6: Final answer
    x = 14,849.75

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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.