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Finding the Fourth Proportional to 10,937.70, 16,418.70 and 6,782.40

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Solution

The fourth proportional to 10,937.70, 16,418.70 and 6,782.40 is: 10,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,937.70 : 16,418.70 = 6,782.40 : x
  2. Step 2: Convert to fraction form
    10,937.70/16,418.70 = 6,782.40/x
  3. Step 3: Cross multiply
    10,937.70x = 16,418.70 × 6,782.40
  4. Step 4: Simplify right side
    10,937.70x = 111,358,190.88
  5. Step 5: Solve for x
    x = 111,358,190.88/10,937.70
  6. Step 6: Final answer
    x = 10,181.13

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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.