Home / 15,197.81-20,924.48-13,307.42

Finding the Fourth Proportional to 15,197.81, 20,924.48 and 13,307.42

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Solution

The fourth proportional to 15,197.81, 20,924.48 and 13,307.42 is: 18,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.81 : 20,924.48 = 13,307.42 : x
  2. Step 2: Convert to fraction form
    15,197.81/20,924.48 = 13,307.42/x
  3. Step 3: Cross multiply
    15,197.81x = 20,924.48 × 13,307.42
  4. Step 4: Simplify right side
    15,197.81x = 278,450,929.22
  5. Step 5: Solve for x
    x = 278,450,929.22/15,197.81
  6. Step 6: Final answer
    x = 18,321.79

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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.