Home / 13,291.47-18,342.23-7,323.12

Finding the Fourth Proportional to 13,291.47, 18,342.23 and 7,323.12

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Solution

The fourth proportional to 13,291.47, 18,342.23 and 7,323.12 is: 10,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.47 : 18,342.23 = 7,323.12 : x
  2. Step 2: Convert to fraction form
    13,291.47/18,342.23 = 7,323.12/x
  3. Step 3: Cross multiply
    13,291.47x = 18,342.23 × 7,323.12
  4. Step 4: Simplify right side
    13,291.47x = 134,322,314.74
  5. Step 5: Solve for x
    x = 134,322,314.74/13,291.47
  6. Step 6: Final answer
    x = 10,105.90

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Double scale
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Similar ratio
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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.