Home / 21,303,006.80-31,954,510.20-12,233,080.40

Finding the Fourth Proportional to 21,303,006.80, 31,954,510.20 and 12,233,080.40

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Solution

The fourth proportional to 21,303,006.80, 31,954,510.20 and 12,233,080.40 is: 18,349,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303,006.80 : 31,954,510.20 = 12,233,080.40 : x
  2. Step 2: Convert to fraction form
    21,303,006.80/31,954,510.20 = 12,233,080.40/x
  3. Step 3: Cross multiply
    21,303,006.80x = 31,954,510.20 × 12,233,080.40
  4. Step 4: Simplify right side
    21,303,006.80x = 390,902,092,419,220.06
  5. Step 5: Solve for x
    x = 390,902,092,419,220.06/21,303,006.80
  6. Step 6: Final answer
    x = 18,349,620.60

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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.