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Finding the Fourth Proportional to 9,994.40, 14,979.60 and 6,874.40

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Solution

The fourth proportional to 9,994.40, 14,979.60 and 6,874.40 is: 10,303.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.40 : 14,979.60 = 6,874.40 : x
  2. Step 2: Convert to fraction form
    9,994.40/14,979.60 = 6,874.40/x
  3. Step 3: Cross multiply
    9,994.40x = 14,979.60 × 6,874.40
  4. Step 4: Simplify right side
    9,994.40x = 102,975,762.24
  5. Step 5: Solve for x
    x = 102,975,762.24/9,994.40
  6. Step 6: Final answer
    x = 10,303.35

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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.