Home / 13,150.34-18,147.90-7,182.36

Finding the Fourth Proportional to 13,150.34, 18,147.90 and 7,182.36

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Solution

The fourth proportional to 13,150.34, 18,147.90 and 7,182.36 is: 9,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.34 : 18,147.90 = 7,182.36 : x
  2. Step 2: Convert to fraction form
    13,150.34/18,147.90 = 7,182.36/x
  3. Step 3: Cross multiply
    13,150.34x = 18,147.90 × 7,182.36
  4. Step 4: Simplify right side
    13,150.34x = 130,344,751.04
  5. Step 5: Solve for x
    x = 130,344,751.04/13,150.34
  6. Step 6: Final answer
    x = 9,911.90

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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.