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Finding the Fourth Proportional to 13,298.50, 18,349.50 and 7,994.62

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Solution

The fourth proportional to 13,298.50, 18,349.50 and 7,994.62 is: 11,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.50 : 18,349.50 = 7,994.62 : x
  2. Step 2: Convert to fraction form
    13,298.50/18,349.50 = 7,994.62/x
  3. Step 3: Cross multiply
    13,298.50x = 18,349.50 × 7,994.62
  4. Step 4: Simplify right side
    13,298.50x = 146,697,279.69
  5. Step 5: Solve for x
    x = 146,697,279.69/13,298.50
  6. Step 6: Final answer
    x = 11,031.11

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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.