Home / 15,875,287.80-21,917,288.75-9,999,958.43

Finding the Fourth Proportional to 15,875,287.80, 21,917,288.75 and 9,999,958.43

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Solution

The fourth proportional to 15,875,287.80, 21,917,288.75 and 9,999,958.43 is: 13,805,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875,287.80 : 21,917,288.75 = 9,999,958.43 : x
  2. Step 2: Convert to fraction form
    15,875,287.80/21,917,288.75 = 9,999,958.43/x
  3. Step 3: Cross multiply
    15,875,287.80x = 21,917,288.75 × 9,999,958.43
  4. Step 4: Simplify right side
    15,875,287.80x = 219,171,976,478,099.78
  5. Step 5: Solve for x
    x = 219,171,976,478,099.78/15,875,287.80
  6. Step 6: Final answer
    x = 13,805,858.47

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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.