Home / 21,351,272.10-31,983,362.55-13,239,348.90

Finding the Fourth Proportional to 21,351,272.10, 31,983,362.55 and 13,239,348.90

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Solution

The fourth proportional to 21,351,272.10, 31,983,362.55 and 13,239,348.90 is: 19,832,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351,272.10 : 31,983,362.55 = 13,239,348.90 : x
  2. Step 2: Convert to fraction form
    21,351,272.10/31,983,362.55 = 13,239,348.90/x
  3. Step 3: Cross multiply
    21,351,272.10x = 31,983,362.55 × 13,239,348.90
  4. Step 4: Simplify right side
    21,351,272.10x = 423,438,895,794,643.69
  5. Step 5: Solve for x
    x = 423,438,895,794,643.69/21,351,272.10
  6. Step 6: Final answer
    x = 19,832,021.90

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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.