Home / 21,001,578.80-31,502,368.20-19,726,120.40

Finding the Fourth Proportional to 21,001,578.80, 31,502,368.20 and 19,726,120.40

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Solution

The fourth proportional to 21,001,578.80, 31,502,368.20 and 19,726,120.40 is: 29,589,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,578.80 : 31,502,368.20 = 19,726,120.40 : x
  2. Step 2: Convert to fraction form
    21,001,578.80/31,502,368.20 = 19,726,120.40/x
  3. Step 3: Cross multiply
    21,001,578.80x = 31,502,368.20 × 19,726,120.40
  4. Step 4: Simplify right side
    21,001,578.80x = 621,419,507,998,331.25
  5. Step 5: Solve for x
    x = 621,419,507,998,331.25/21,001,578.80
  6. Step 6: Final answer
    x = 29,589,180.60

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1.5x scale

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.