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Finding the Fourth Proportional to 10,976.60, 16,464.90 and 9,709.40

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Solution

The fourth proportional to 10,976.60, 16,464.90 and 9,709.40 is: 14,564.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.60 : 16,464.90 = 9,709.40 : x
  2. Step 2: Convert to fraction form
    10,976.60/16,464.90 = 9,709.40/x
  3. Step 3: Cross multiply
    10,976.60x = 16,464.90 × 9,709.40
  4. Step 4: Simplify right side
    10,976.60x = 159,864,300.06
  5. Step 5: Solve for x
    x = 159,864,300.06/10,976.60
  6. Step 6: Final answer
    x = 14,564.10

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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.