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Finding the Fourth Proportional to 12,834.10, 17,700.89 and 7,798.20

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Solution

The fourth proportional to 12,834.10, 17,700.89 and 7,798.20 is: 10,755.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,834.10 : 17,700.89 = 7,798.20 : x
  2. Step 2: Convert to fraction form
    12,834.10/17,700.89 = 7,798.20/x
  3. Step 3: Cross multiply
    12,834.10x = 17,700.89 × 7,798.20
  4. Step 4: Simplify right side
    12,834.10x = 138,035,080.40
  5. Step 5: Solve for x
    x = 138,035,080.40/12,834.10
  6. Step 6: Final answer
    x = 10,755.34

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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.