Home / 12,709.78-17,539.60-7,044.62

Finding the Fourth Proportional to 12,709.78, 17,539.60 and 7,044.62

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Solution

The fourth proportional to 12,709.78, 17,539.60 and 7,044.62 is: 9,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.78 : 17,539.60 = 7,044.62 : x
  2. Step 2: Convert to fraction form
    12,709.78/17,539.60 = 7,044.62/x
  3. Step 3: Cross multiply
    12,709.78x = 17,539.60 × 7,044.62
  4. Step 4: Simplify right side
    12,709.78x = 123,559,816.95
  5. Step 5: Solve for x
    x = 123,559,816.95/12,709.78
  6. Step 6: Final answer
    x = 9,721.63

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1.5x scale

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.