Home / 13,723.28-18,940.86-7,755.02

Finding the Fourth Proportional to 13,723.28, 18,940.86 and 7,755.02

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Solution

The fourth proportional to 13,723.28, 18,940.86 and 7,755.02 is: 10,703.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.28 : 18,940.86 = 7,755.02 : x
  2. Step 2: Convert to fraction form
    13,723.28/18,940.86 = 7,755.02/x
  3. Step 3: Cross multiply
    13,723.28x = 18,940.86 × 7,755.02
  4. Step 4: Simplify right side
    13,723.28x = 146,886,748.12
  5. Step 5: Solve for x
    x = 146,886,748.12/13,723.28
  6. Step 6: Final answer
    x = 10,703.47

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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.