Home / 20,753,929.70-31,130,894.55-11,187,991.70

Finding the Fourth Proportional to 20,753,929.70, 31,130,894.55 and 11,187,991.70

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Solution

The fourth proportional to 20,753,929.70, 31,130,894.55 and 11,187,991.70 is: 16,781,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753,929.70 : 31,130,894.55 = 11,187,991.70 : x
  2. Step 2: Convert to fraction form
    20,753,929.70/31,130,894.55 = 11,187,991.70/x
  3. Step 3: Cross multiply
    20,753,929.70x = 31,130,894.55 × 11,187,991.70
  4. Step 4: Simplify right side
    20,753,929.70x = 348,292,189,838,975.25
  5. Step 5: Solve for x
    x = 348,292,189,838,975.25/20,753,929.70
  6. Step 6: Final answer
    x = 16,781,987.55

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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.