Home / 13,145.82-18,141.29-7,177.63

Finding the Fourth Proportional to 13,145.82, 18,141.29 and 7,177.63

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Solution

The fourth proportional to 13,145.82, 18,141.29 and 7,177.63 is: 9,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.82 : 18,141.29 = 7,177.63 : x
  2. Step 2: Convert to fraction form
    13,145.82/18,141.29 = 7,177.63/x
  3. Step 3: Cross multiply
    13,145.82x = 18,141.29 × 7,177.63
  4. Step 4: Simplify right side
    13,145.82x = 130,211,467.34
  5. Step 5: Solve for x
    x = 130,211,467.34/13,145.82
  6. Step 6: Final answer
    x = 9,905.16

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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.