Home / 19,309,071.40-28,921,616.70-11,722,805.80

Finding the Fourth Proportional to 19,309,071.40, 28,921,616.70 and 11,722,805.80

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Solution

The fourth proportional to 19,309,071.40, 28,921,616.70 and 11,722,805.80 is: 17,558,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309,071.40 : 28,921,616.70 = 11,722,805.80 : x
  2. Step 2: Convert to fraction form
    19,309,071.40/28,921,616.70 = 11,722,805.80/x
  3. Step 3: Cross multiply
    19,309,071.40x = 28,921,616.70 × 11,722,805.80
  4. Step 4: Simplify right side
    19,309,071.40x = 339,042,495,996,136.88
  5. Step 5: Solve for x
    x = 339,042,495,996,136.88/19,309,071.40
  6. Step 6: Final answer
    x = 17,558,715.74

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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.