Home / 15,930.67-21,990.42-10,623.55

Finding the Fourth Proportional to 15,930.67, 21,990.42 and 10,623.55

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Solution

The fourth proportional to 15,930.67, 21,990.42 and 10,623.55 is: 14,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.67 : 21,990.42 = 10,623.55 : x
  2. Step 2: Convert to fraction form
    15,930.67/21,990.42 = 10,623.55/x
  3. Step 3: Cross multiply
    15,930.67x = 21,990.42 × 10,623.55
  4. Step 4: Simplify right side
    15,930.67x = 233,616,326.39
  5. Step 5: Solve for x
    x = 233,616,326.39/15,930.67
  6. Step 6: Final answer
    x = 14,664.56

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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.