Home / 21,312,006.40-31,968,009.60-19,359,452.80

Finding the Fourth Proportional to 21,312,006.40, 31,968,009.60 and 19,359,452.80

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Solution

The fourth proportional to 21,312,006.40, 31,968,009.60 and 19,359,452.80 is: 29,039,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,006.40 : 31,968,009.60 = 19,359,452.80 : x
  2. Step 2: Convert to fraction form
    21,312,006.40/31,968,009.60 = 19,359,452.80/x
  3. Step 3: Cross multiply
    21,312,006.40x = 31,968,009.60 × 19,359,452.80
  4. Step 4: Simplify right side
    21,312,006.40x = 618,883,172,961,146.88
  5. Step 5: Solve for x
    x = 618,883,172,961,146.88/21,312,006.40
  6. Step 6: Final answer
    x = 29,039,179.20

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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.