Home / 12,433.92-17,158.80-7,128.48

Finding the Fourth Proportional to 12,433.92, 17,158.80 and 7,128.48

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Solution

The fourth proportional to 12,433.92, 17,158.80 and 7,128.48 is: 9,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,433.92 : 17,158.80 = 7,128.48 : x
  2. Step 2: Convert to fraction form
    12,433.92/17,158.80 = 7,128.48/x
  3. Step 3: Cross multiply
    12,433.92x = 17,158.80 × 7,128.48
  4. Step 4: Simplify right side
    12,433.92x = 122,316,162.62
  5. Step 5: Solve for x
    x = 122,316,162.62/12,433.92
  6. Step 6: Final answer
    x = 9,837.30

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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.