Home / 15,307,323.70-21,124,107.86-8,431,805.76

Finding the Fourth Proportional to 15,307,323.70, 21,124,107.86 and 8,431,805.76

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Solution

The fourth proportional to 15,307,323.70, 21,124,107.86 and 8,431,805.76 is: 11,635,892.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307,323.70 : 21,124,107.86 = 8,431,805.76 : x
  2. Step 2: Convert to fraction form
    15,307,323.70/21,124,107.86 = 8,431,805.76/x
  3. Step 3: Cross multiply
    15,307,323.70x = 21,124,107.86 × 8,431,805.76
  4. Step 4: Simplify right side
    15,307,323.70x = 178,114,374,328,809.25
  5. Step 5: Solve for x
    x = 178,114,374,328,809.25/15,307,323.70
  6. Step 6: Final answer
    x = 11,635,892.58

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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.