Home / 13,400.65-20,101.16-9,239.55

Finding the Fourth Proportional to 13,400.65, 20,101.16 and 9,239.55

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Solution

The fourth proportional to 13,400.65, 20,101.16 and 9,239.55 is: 13,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.65 : 20,101.16 = 9,239.55 : x
  2. Step 2: Convert to fraction form
    13,400.65/20,101.16 = 9,239.55/x
  3. Step 3: Cross multiply
    13,400.65x = 20,101.16 × 9,239.55
  4. Step 4: Simplify right side
    13,400.65x = 185,725,672.88
  5. Step 5: Solve for x
    x = 185,725,672.88/13,400.65
  6. Step 6: Final answer
    x = 13,859.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.