Home / 21,891,350.40-30,209,860.80-12,102,403.20

Finding the Fourth Proportional to 21,891,350.40, 30,209,860.80 and 12,102,403.20

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Solution

The fourth proportional to 21,891,350.40, 30,209,860.80 and 12,102,403.20 is: 16,701,204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891,350.40 : 30,209,860.80 = 12,102,403.20 : x
  2. Step 2: Convert to fraction form
    21,891,350.40/30,209,860.80 = 12,102,403.20/x
  3. Step 3: Cross multiply
    21,891,350.40x = 30,209,860.80 × 12,102,403.20
  4. Step 4: Simplify right side
    21,891,350.40x = 365,611,916,017,474.56
  5. Step 5: Solve for x
    x = 365,611,916,017,474.56/21,891,350.40
  6. Step 6: Final answer
    x = 16,701,204.33

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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.