Home / 13,148.56-18,145.45-7,180.68

Finding the Fourth Proportional to 13,148.56, 18,145.45 and 7,180.68

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Solution

The fourth proportional to 13,148.56, 18,145.45 and 7,180.68 is: 9,909.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.56 : 18,145.45 = 7,180.68 : x
  2. Step 2: Convert to fraction form
    13,148.56/18,145.45 = 7,180.68/x
  3. Step 3: Cross multiply
    13,148.56x = 18,145.45 × 7,180.68
  4. Step 4: Simplify right side
    13,148.56x = 130,296,669.91
  5. Step 5: Solve for x
    x = 130,296,669.91/13,148.56
  6. Step 6: Final answer
    x = 9,909.58

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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.