Home / 21,001,350.80-31,502,026.20-19,206,261.20

Finding the Fourth Proportional to 21,001,350.80, 31,502,026.20 and 19,206,261.20

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Solution

The fourth proportional to 21,001,350.80, 31,502,026.20 and 19,206,261.20 is: 28,809,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,350.80 : 31,502,026.20 = 19,206,261.20 : x
  2. Step 2: Convert to fraction form
    21,001,350.80/31,502,026.20 = 19,206,261.20/x
  3. Step 3: Cross multiply
    21,001,350.80x = 31,502,026.20 × 19,206,261.20
  4. Step 4: Simplify right side
    21,001,350.80x = 605,036,143,526,443.38
  5. Step 5: Solve for x
    x = 605,036,143,526,443.38/21,001,350.80
  6. Step 6: Final answer
    x = 28,809,391.80

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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.