Home / 31,290.75-43,181.10-17,143.29

Finding the Fourth Proportional to 31,290.75, 43,181.10 and 17,143.29

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Solution

The fourth proportional to 31,290.75, 43,181.10 and 17,143.29 is: 23,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.75 : 43,181.10 = 17,143.29 : x
  2. Step 2: Convert to fraction form
    31,290.75/43,181.10 = 17,143.29/x
  3. Step 3: Cross multiply
    31,290.75x = 43,181.10 × 17,143.29
  4. Step 4: Simplify right side
    31,290.75x = 740,266,119.82
  5. Step 5: Solve for x
    x = 740,266,119.82/31,290.75
  6. Step 6: Final answer
    x = 23,657.67

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Double scale
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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.