Home / 13,655.71-18,844.77-7,687.23

Finding the Fourth Proportional to 13,655.71, 18,844.77 and 7,687.23

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Solution

The fourth proportional to 13,655.71, 18,844.77 and 7,687.23 is: 10,608.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.71 : 18,844.77 = 7,687.23 : x
  2. Step 2: Convert to fraction form
    13,655.71/18,844.77 = 7,687.23/x
  3. Step 3: Cross multiply
    13,655.71x = 18,844.77 × 7,687.23
  4. Step 4: Simplify right side
    13,655.71x = 144,864,081.29
  5. Step 5: Solve for x
    x = 144,864,081.29/13,655.71
  6. Step 6: Final answer
    x = 10,608.32

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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.