Home / 18,711,345.20-28,071,100.20-10,628,193.20

Finding the Fourth Proportional to 18,711,345.20, 28,071,100.20 and 10,628,193.20

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Solution

The fourth proportional to 18,711,345.20, 28,071,100.20 and 10,628,193.20 is: 15,944,608.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,345.20 : 28,071,100.20 = 10,628,193.20 : x
  2. Step 2: Convert to fraction form
    18,711,345.20/28,071,100.20 = 10,628,193.20/x
  3. Step 3: Cross multiply
    18,711,345.20x = 28,071,100.20 × 10,628,193.20
  4. Step 4: Simplify right side
    18,711,345.20x = 298,345,076,262,158.62
  5. Step 5: Solve for x
    x = 298,345,076,262,158.62/18,711,345.20
  6. Step 6: Final answer
    x = 15,944,608.64

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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.