Home / 15,930.42-21,990.08-10,623.30

Finding the Fourth Proportional to 15,930.42, 21,990.08 and 10,623.30

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Solution

The fourth proportional to 15,930.42, 21,990.08 and 10,623.30 is: 14,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.42 : 21,990.08 = 10,623.30 : x
  2. Step 2: Convert to fraction form
    15,930.42/21,990.08 = 10,623.30/x
  3. Step 3: Cross multiply
    15,930.42x = 21,990.08 × 10,623.30
  4. Step 4: Simplify right side
    15,930.42x = 233,607,163.75
  5. Step 5: Solve for x
    x = 233,607,163.75/15,930.42
  6. Step 6: Final answer
    x = 14,664.22

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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.