Home / 21,129,300-31,704,759.36-10,062,900

Finding the Fourth Proportional to 21,129,300, 31,704,759.36 and 10,062,900

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Solution

The fourth proportional to 21,129,300, 31,704,759.36 and 10,062,900 is: 15,099,497.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,300 : 31,704,759.36 = 10,062,900 : x
  2. Step 2: Convert to fraction form
    21,129,300/31,704,759.36 = 10,062,900/x
  3. Step 3: Cross multiply
    21,129,300x = 31,704,759.36 × 10,062,900
  4. Step 4: Simplify right side
    21,129,300x = 319,041,822,963,744
  5. Step 5: Solve for x
    x = 319,041,822,963,744/21,129,300
  6. Step 6: Final answer
    x = 15,099,497.99

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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.