Home / 15,431,530.76-21,285,752.58-9,915,425.24

Finding the Fourth Proportional to 15,431,530.76, 21,285,752.58 and 9,915,425.24

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Solution

The fourth proportional to 15,431,530.76, 21,285,752.58 and 9,915,425.24 is: 13,677,015.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431,530.76 : 21,285,752.58 = 9,915,425.24 : x
  2. Step 2: Convert to fraction form
    15,431,530.76/21,285,752.58 = 9,915,425.24/x
  3. Step 3: Cross multiply
    15,431,530.76x = 21,285,752.58 × 9,915,425.24
  4. Step 4: Simplify right side
    15,431,530.76x = 211,057,288,384,127.09
  5. Step 5: Solve for x
    x = 211,057,288,384,127.09/15,431,530.76
  6. Step 6: Final answer
    x = 13,677,015.69

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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.