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Finding the Fourth Proportional to 9,919.60, 14,911.80 and 9,336.40

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Solution

The fourth proportional to 9,919.60, 14,911.80 and 9,336.40 is: 14,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.60 : 14,911.80 = 9,336.40 : x
  2. Step 2: Convert to fraction form
    9,919.60/14,911.80 = 9,336.40/x
  3. Step 3: Cross multiply
    9,919.60x = 14,911.80 × 9,336.40
  4. Step 4: Simplify right side
    9,919.60x = 139,222,529.52
  5. Step 5: Solve for x
    x = 139,222,529.52/9,919.60
  6. Step 6: Final answer
    x = 14,035.10

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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.