Home / 21,930.61-30,245.12-15,544.57

Finding the Fourth Proportional to 21,930.61, 30,245.12 and 15,544.57

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Solution

The fourth proportional to 21,930.61, 30,245.12 and 15,544.57 is: 21,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.61 : 30,245.12 = 15,544.57 : x
  2. Step 2: Convert to fraction form
    21,930.61/30,245.12 = 15,544.57/x
  3. Step 3: Cross multiply
    21,930.61x = 30,245.12 × 15,544.57
  4. Step 4: Simplify right side
    21,930.61x = 470,147,307.28
  5. Step 5: Solve for x
    x = 470,147,307.28/21,930.61
  6. Step 6: Final answer
    x = 21,437.95

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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.