Home / 13,695.51-18,899.37-7,727.10

Finding the Fourth Proportional to 13,695.51, 18,899.37 and 7,727.10

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Solution

The fourth proportional to 13,695.51, 18,899.37 and 7,727.10 is: 10,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.51 : 18,899.37 = 7,727.10 : x
  2. Step 2: Convert to fraction form
    13,695.51/18,899.37 = 7,727.10/x
  3. Step 3: Cross multiply
    13,695.51x = 18,899.37 × 7,727.10
  4. Step 4: Simplify right side
    13,695.51x = 146,037,321.93
  5. Step 5: Solve for x
    x = 146,037,321.93/13,695.51
  6. Step 6: Final answer
    x = 10,663.15

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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.