Home / 12,687,998.50-17,509,455.48-6,886,781.38

Finding the Fourth Proportional to 12,687,998.50, 17,509,455.48 and 6,886,781.38

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Solution

The fourth proportional to 12,687,998.50, 17,509,455.48 and 6,886,781.38 is: 9,503,767.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,998.50 : 17,509,455.48 = 6,886,781.38 : x
  2. Step 2: Convert to fraction form
    12,687,998.50/17,509,455.48 = 6,886,781.38/x
  3. Step 3: Cross multiply
    12,687,998.50x = 17,509,455.48 × 6,886,781.38
  4. Step 4: Simplify right side
    12,687,998.50x = 120,583,791,973,602.97
  5. Step 5: Solve for x
    x = 120,583,791,973,602.97/12,687,998.50
  6. Step 6: Final answer
    x = 9,503,767.83

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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.