Home / 13,149.21-18,145.65-7,180.93

Finding the Fourth Proportional to 13,149.21, 18,145.65 and 7,180.93

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Solution

The fourth proportional to 13,149.21, 18,145.65 and 7,180.93 is: 9,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.21 : 18,145.65 = 7,180.93 : x
  2. Step 2: Convert to fraction form
    13,149.21/18,145.65 = 7,180.93/x
  3. Step 3: Cross multiply
    13,149.21x = 18,145.65 × 7,180.93
  4. Step 4: Simplify right side
    13,149.21x = 130,302,642.45
  5. Step 5: Solve for x
    x = 130,302,642.45/13,149.21
  6. Step 6: Final answer
    x = 9,909.54

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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.