Home / 13,326.35-18,390.45-7,358.40

Finding the Fourth Proportional to 13,326.35, 18,390.45 and 7,358.40

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Solution

The fourth proportional to 13,326.35, 18,390.45 and 7,358.40 is: 10,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.35 : 18,390.45 = 7,358.40 : x
  2. Step 2: Convert to fraction form
    13,326.35/18,390.45 = 7,358.40/x
  3. Step 3: Cross multiply
    13,326.35x = 18,390.45 × 7,358.40
  4. Step 4: Simplify right side
    13,326.35x = 135,324,287.28
  5. Step 5: Solve for x
    x = 135,324,287.28/13,326.35
  6. Step 6: Final answer
    x = 10,154.64

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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.