Home / 12,543.77-18,799.13-6,999.72

Finding the Fourth Proportional to 12,543.77, 18,799.13 and 6,999.72

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Solution

The fourth proportional to 12,543.77, 18,799.13 and 6,999.72 is: 10,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.77 : 18,799.13 = 6,999.72 : x
  2. Step 2: Convert to fraction form
    12,543.77/18,799.13 = 6,999.72/x
  3. Step 3: Cross multiply
    12,543.77x = 18,799.13 × 6,999.72
  4. Step 4: Simplify right side
    12,543.77x = 131,588,611.25
  5. Step 5: Solve for x
    x = 131,588,611.25/12,543.77
  6. Step 6: Final answer
    x = 10,490.36

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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.