Home / 21,718,659.36-29,976,969.57-12,431,613.69

Finding the Fourth Proportional to 21,718,659.36, 29,976,969.57 and 12,431,613.69

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Solution

The fourth proportional to 21,718,659.36, 29,976,969.57 and 12,431,613.69 is: 17,158,614.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718,659.36 : 29,976,969.57 = 12,431,613.69 : x
  2. Step 2: Convert to fraction form
    21,718,659.36/29,976,969.57 = 12,431,613.69/x
  3. Step 3: Cross multiply
    21,718,659.36x = 29,976,969.57 × 12,431,613.69
  4. Step 4: Simplify right side
    21,718,659.36x = 372,662,105,291,125.38
  5. Step 5: Solve for x
    x = 372,662,105,291,125.38/21,718,659.36
  6. Step 6: Final answer
    x = 17,158,614.59

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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.