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Finding the Fourth Proportional to 13,722.66, 18,937.08 and 7,754.22

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Solution

The fourth proportional to 13,722.66, 18,937.08 and 7,754.22 is: 10,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.66 : 18,937.08 = 7,754.22 : x
  2. Step 2: Convert to fraction form
    13,722.66/18,937.08 = 7,754.22/x
  3. Step 3: Cross multiply
    13,722.66x = 18,937.08 × 7,754.22
  4. Step 4: Simplify right side
    13,722.66x = 146,842,284.48
  5. Step 5: Solve for x
    x = 146,842,284.48/13,722.66
  6. Step 6: Final answer
    x = 10,700.72

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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.