Home / 15,778,538.09-21,772,723.79-9,161,833.15

Finding the Fourth Proportional to 15,778,538.09, 21,772,723.79 and 9,161,833.15

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Solution

The fourth proportional to 15,778,538.09, 21,772,723.79 and 9,161,833.15 is: 12,642,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778,538.09 : 21,772,723.79 = 9,161,833.15 : x
  2. Step 2: Convert to fraction form
    15,778,538.09/21,772,723.79 = 9,161,833.15/x
  3. Step 3: Cross multiply
    15,778,538.09x = 21,772,723.79 × 9,161,833.15
  4. Step 4: Simplify right side
    15,778,538.09x = 199,478,062,585,015.62
  5. Step 5: Solve for x
    x = 199,478,062,585,015.62/15,778,538.09
  6. Step 6: Final answer
    x = 12,642,366.58

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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.