Home / 13,173.35-18,178.45-7,507.31

Finding the Fourth Proportional to 13,173.35, 18,178.45 and 7,507.31

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Solution

The fourth proportional to 13,173.35, 18,178.45 and 7,507.31 is: 10,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.35 : 18,178.45 = 7,507.31 : x
  2. Step 2: Convert to fraction form
    13,173.35/18,178.45 = 7,507.31/x
  3. Step 3: Cross multiply
    13,173.35x = 18,178.45 × 7,507.31
  4. Step 4: Simplify right side
    13,173.35x = 136,471,149.81
  5. Step 5: Solve for x
    x = 136,471,149.81/13,173.35
  6. Step 6: Final answer
    x = 10,359.64

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Half scale
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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.