Home / 13,479.75-20,218.93-5,159.13

Finding the Fourth Proportional to 13,479.75, 20,218.93 and 5,159.13

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Solution

The fourth proportional to 13,479.75, 20,218.93 and 5,159.13 is: 7,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.75 : 20,218.93 = 5,159.13 : x
  2. Step 2: Convert to fraction form
    13,479.75/20,218.93 = 5,159.13/x
  3. Step 3: Cross multiply
    13,479.75x = 20,218.93 × 5,159.13
  4. Step 4: Simplify right side
    13,479.75x = 104,312,088.33
  5. Step 5: Solve for x
    x = 104,312,088.33/13,479.75
  6. Step 6: Final answer
    x = 7,738.43

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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.