Home / 20,320,896-28,041,821.28-12,061,317.60

Finding the Fourth Proportional to 20,320,896, 28,041,821.28 and 12,061,317.60

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Solution

The fourth proportional to 20,320,896, 28,041,821.28 and 12,061,317.60 is: 16,644,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320,896 : 28,041,821.28 = 12,061,317.60 : x
  2. Step 2: Convert to fraction form
    20,320,896/28,041,821.28 = 12,061,317.60/x
  3. Step 3: Cross multiply
    20,320,896x = 28,041,821.28 × 12,061,317.60
  4. Step 4: Simplify right side
    20,320,896x = 338,221,312,540,518.56
  5. Step 5: Solve for x
    x = 338,221,312,540,518.56/20,320,896
  6. Step 6: Final answer
    x = 16,644,015.72

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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.