Home / 11,845.47-17,748.13-7,155.63

Finding the Fourth Proportional to 11,845.47, 17,748.13 and 7,155.63

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Solution

The fourth proportional to 11,845.47, 17,748.13 and 7,155.63 is: 10,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.47 : 17,748.13 = 7,155.63 : x
  2. Step 2: Convert to fraction form
    11,845.47/17,748.13 = 7,155.63/x
  3. Step 3: Cross multiply
    11,845.47x = 17,748.13 × 7,155.63
  4. Step 4: Simplify right side
    11,845.47x = 126,999,033.58
  5. Step 5: Solve for x
    x = 126,999,033.58/11,845.47
  6. Step 6: Final answer
    x = 10,721.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.