Home / 12,445.80-18,643.65-6,186.87

Finding the Fourth Proportional to 12,445.80, 18,643.65 and 6,186.87

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Solution

The fourth proportional to 12,445.80, 18,643.65 and 6,186.87 is: 9,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.80 : 18,643.65 = 6,186.87 : x
  2. Step 2: Convert to fraction form
    12,445.80/18,643.65 = 6,186.87/x
  3. Step 3: Cross multiply
    12,445.80x = 18,643.65 × 6,186.87
  4. Step 4: Simplify right side
    12,445.80x = 115,345,838.88
  5. Step 5: Solve for x
    x = 115,345,838.88/12,445.80
  6. Step 6: Final answer
    x = 9,267.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.