Home / 20,315,348.48-28,035,101.76-11,148,144.32

Finding the Fourth Proportional to 20,315,348.48, 28,035,101.76 and 11,148,144.32

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Solution

The fourth proportional to 20,315,348.48, 28,035,101.76 and 11,148,144.32 is: 15,384,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315,348.48 : 28,035,101.76 = 11,148,144.32 : x
  2. Step 2: Convert to fraction form
    20,315,348.48/28,035,101.76 = 11,148,144.32/x
  3. Step 3: Cross multiply
    20,315,348.48x = 28,035,101.76 × 11,148,144.32
  4. Step 4: Simplify right side
    20,315,348.48x = 312,539,360,446,366
  5. Step 5: Solve for x
    x = 312,539,360,446,366/20,315,348.48
  6. Step 6: Final answer
    x = 15,384,395.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.