Home / 13,655.06-18,843.27-7,686.98

Finding the Fourth Proportional to 13,655.06, 18,843.27 and 7,686.98

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Solution

The fourth proportional to 13,655.06, 18,843.27 and 7,686.98 is: 10,607.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.06 : 18,843.27 = 7,686.98 : x
  2. Step 2: Convert to fraction form
    13,655.06/18,843.27 = 7,686.98/x
  3. Step 3: Cross multiply
    13,655.06x = 18,843.27 × 7,686.98
  4. Step 4: Simplify right side
    13,655.06x = 144,847,839.62
  5. Step 5: Solve for x
    x = 144,847,839.62/13,655.06
  6. Step 6: Final answer
    x = 10,607.63

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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.