Home / 12,558.72-17,331.36-7,255.68

Finding the Fourth Proportional to 12,558.72, 17,331.36 and 7,255.68

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Solution

The fourth proportional to 12,558.72, 17,331.36 and 7,255.68 is: 10,013.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.72 : 17,331.36 = 7,255.68 : x
  2. Step 2: Convert to fraction form
    12,558.72/17,331.36 = 7,255.68/x
  3. Step 3: Cross multiply
    12,558.72x = 17,331.36 × 7,255.68
  4. Step 4: Simplify right side
    12,558.72x = 125,750,802.12
  5. Step 5: Solve for x
    x = 125,750,802.12/12,558.72
  6. Step 6: Final answer
    x = 10,013.03

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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.