Home / 21,097,961.40-31,646,942.10-19,145,407.80

Finding the Fourth Proportional to 21,097,961.40, 31,646,942.10 and 19,145,407.80

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Solution

The fourth proportional to 21,097,961.40, 31,646,942.10 and 19,145,407.80 is: 28,718,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097,961.40 : 31,646,942.10 = 19,145,407.80 : x
  2. Step 2: Convert to fraction form
    21,097,961.40/31,646,942.10 = 19,145,407.80/x
  3. Step 3: Cross multiply
    21,097,961.40x = 31,646,942.10 × 19,145,407.80
  4. Step 4: Simplify right side
    21,097,961.40x = 605,893,612,127,488.38
  5. Step 5: Solve for x
    x = 605,893,612,127,488.38/21,097,961.40
  6. Step 6: Final answer
    x = 28,718,111.70

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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.