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Finding the Fourth Proportional to 14,800.80, 20,419.78 and 8,749.77

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Solution

The fourth proportional to 14,800.80, 20,419.78 and 8,749.77 is: 12,071.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,800.80 : 20,419.78 = 8,749.77 : x
  2. Step 2: Convert to fraction form
    14,800.80/20,419.78 = 8,749.77/x
  3. Step 3: Cross multiply
    14,800.80x = 20,419.78 × 8,749.77
  4. Step 4: Simplify right side
    14,800.80x = 178,668,378.45
  5. Step 5: Solve for x
    x = 178,668,378.45/14,800.80
  6. Step 6: Final answer
    x = 12,071.54

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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.