Home / 20,987,660.82-31,482,619.98-6,611,853.72

Finding the Fourth Proportional to 20,987,660.82, 31,482,619.98 and 6,611,853.72

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Solution

The fourth proportional to 20,987,660.82, 31,482,619.98 and 6,611,853.72 is: 9,918,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987,660.82 : 31,482,619.98 = 6,611,853.72 : x
  2. Step 2: Convert to fraction form
    20,987,660.82/31,482,619.98 = 6,611,853.72/x
  3. Step 3: Cross multiply
    20,987,660.82x = 31,482,619.98 × 6,611,853.72
  4. Step 4: Simplify right side
    20,987,660.82x = 208,158,478,030,109.31
  5. Step 5: Solve for x
    x = 208,158,478,030,109.31/20,987,660.82
  6. Step 6: Final answer
    x = 9,918,136.18

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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.