Home / 21,312,086.40-31,968,129.60-19,359,532.80

Finding the Fourth Proportional to 21,312,086.40, 31,968,129.60 and 19,359,532.80

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Solution

The fourth proportional to 21,312,086.40, 31,968,129.60 and 19,359,532.80 is: 29,039,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,086.40 : 31,968,129.60 = 19,359,532.80 : x
  2. Step 2: Convert to fraction form
    21,312,086.40/31,968,129.60 = 19,359,532.80/x
  3. Step 3: Cross multiply
    21,312,086.40x = 31,968,129.60 × 19,359,532.80
  4. Step 4: Simplify right side
    21,312,086.40x = 618,888,053,545,850.88
  5. Step 5: Solve for x
    x = 618,888,053,545,850.88/21,312,086.40
  6. Step 6: Final answer
    x = 29,039,299.20

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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.