Home / 13,326.57-18,390.70-7,358.25

Finding the Fourth Proportional to 13,326.57, 18,390.70 and 7,358.25

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Solution

The fourth proportional to 13,326.57, 18,390.70 and 7,358.25 is: 10,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.57 : 18,390.70 = 7,358.25 : x
  2. Step 2: Convert to fraction form
    13,326.57/18,390.70 = 7,358.25/x
  3. Step 3: Cross multiply
    13,326.57x = 18,390.70 × 7,358.25
  4. Step 4: Simplify right side
    13,326.57x = 135,323,368.28
  5. Step 5: Solve for x
    x = 135,323,368.28/13,326.57
  6. Step 6: Final answer
    x = 10,154.40

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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.