Home / 13,260,657.59-18,288,789.96-7,822,900.79

Finding the Fourth Proportional to 13,260,657.59, 18,288,789.96 and 7,822,900.79

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Solution

The fourth proportional to 13,260,657.59, 18,288,789.96 and 7,822,900.79 is: 10,789,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,657.59 : 18,288,789.96 = 7,822,900.79 : x
  2. Step 2: Convert to fraction form
    13,260,657.59/18,288,789.96 = 7,822,900.79/x
  3. Step 3: Cross multiply
    13,260,657.59x = 18,288,789.96 × 7,822,900.79
  4. Step 4: Simplify right side
    13,260,657.59x = 143,071,389,334,784.12
  5. Step 5: Solve for x
    x = 143,071,389,334,784.12/13,260,657.59
  6. Step 6: Final answer
    x = 10,789,162.48

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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.