Home / 15,935.28-21,989.44-8,860.72

Finding the Fourth Proportional to 15,935.28, 21,989.44 and 8,860.72

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Solution

The fourth proportional to 15,935.28, 21,989.44 and 8,860.72 is: 12,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.28 : 21,989.44 = 8,860.72 : x
  2. Step 2: Convert to fraction form
    15,935.28/21,989.44 = 8,860.72/x
  3. Step 3: Cross multiply
    15,935.28x = 21,989.44 × 8,860.72
  4. Step 4: Simplify right side
    15,935.28x = 194,842,270.80
  5. Step 5: Solve for x
    x = 194,842,270.80/15,935.28
  6. Step 6: Final answer
    x = 12,227.10

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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.