Home / 13,539.08-18,684.04-7,874.12

Finding the Fourth Proportional to 13,539.08, 18,684.04 and 7,874.12

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Solution

The fourth proportional to 13,539.08, 18,684.04 and 7,874.12 is: 10,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.08 : 18,684.04 = 7,874.12 : x
  2. Step 2: Convert to fraction form
    13,539.08/18,684.04 = 7,874.12/x
  3. Step 3: Cross multiply
    13,539.08x = 18,684.04 × 7,874.12
  4. Step 4: Simplify right side
    13,539.08x = 147,120,373.04
  5. Step 5: Solve for x
    x = 147,120,373.04/13,539.08
  6. Step 6: Final answer
    x = 10,866.35

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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.