Home / 13,308.12-18,364.94-7,340.34

Finding the Fourth Proportional to 13,308.12, 18,364.94 and 7,340.34

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Solution

The fourth proportional to 13,308.12, 18,364.94 and 7,340.34 is: 10,129.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.12 : 18,364.94 = 7,340.34 : x
  2. Step 2: Convert to fraction form
    13,308.12/18,364.94 = 7,340.34/x
  3. Step 3: Cross multiply
    13,308.12x = 18,364.94 × 7,340.34
  4. Step 4: Simplify right side
    13,308.12x = 134,804,903.68
  5. Step 5: Solve for x
    x = 134,804,903.68/13,308.12
  6. Step 6: Final answer
    x = 10,129.52

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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.