Home / 13,655.18-18,843.93-7,686.83

Finding the Fourth Proportional to 13,655.18, 18,843.93 and 7,686.83

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Solution

The fourth proportional to 13,655.18, 18,843.93 and 7,686.83 is: 10,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.18 : 18,843.93 = 7,686.83 : x
  2. Step 2: Convert to fraction form
    13,655.18/18,843.93 = 7,686.83/x
  3. Step 3: Cross multiply
    13,655.18x = 18,843.93 × 7,686.83
  4. Step 4: Simplify right side
    13,655.18x = 144,849,992.22
  5. Step 5: Solve for x
    x = 144,849,992.22/13,655.18
  6. Step 6: Final answer
    x = 10,607.70

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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.