Home / 20,405,180.26-28,162,210.17-15,502,334.50

Finding the Fourth Proportional to 20,405,180.26, 28,162,210.17 and 15,502,334.50

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Solution

The fourth proportional to 20,405,180.26, 28,162,210.17 and 15,502,334.50 is: 21,395,547.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,180.26 : 28,162,210.17 = 15,502,334.50 : x
  2. Step 2: Convert to fraction form
    20,405,180.26/28,162,210.17 = 15,502,334.50/x
  3. Step 3: Cross multiply
    20,405,180.26x = 28,162,210.17 × 15,502,334.50
  4. Step 4: Simplify right side
    20,405,180.26x = 436,580,002,314,641.88
  5. Step 5: Solve for x
    x = 436,580,002,314,641.88/20,405,180.26
  6. Step 6: Final answer
    x = 21,395,547.44

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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.