Home / 21,115,665.40-31,736,483.70-20,737,751.80

Finding the Fourth Proportional to 21,115,665.40, 31,736,483.70 and 20,737,751.80

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Solution

The fourth proportional to 21,115,665.40, 31,736,483.70 and 20,737,751.80 is: 31,168,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,665.40 : 31,736,483.70 = 20,737,751.80 : x
  2. Step 2: Convert to fraction form
    21,115,665.40/31,736,483.70 = 20,737,751.80/x
  3. Step 3: Cross multiply
    21,115,665.40x = 31,736,483.70 × 20,737,751.80
  4. Step 4: Simplify right side
    21,115,665.40x = 658,143,321,975,345.62
  5. Step 5: Solve for x
    x = 658,143,321,975,345.62/21,115,665.40
  6. Step 6: Final answer
    x = 31,168,486.03

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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.