Home / 10,777.28-16,143.24-4,938.80

Finding the Fourth Proportional to 10,777.28, 16,143.24 and 4,938.80

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Solution

The fourth proportional to 10,777.28, 16,143.24 and 4,938.80 is: 7,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,777.28 : 16,143.24 = 4,938.80 : x
  2. Step 2: Convert to fraction form
    10,777.28/16,143.24 = 4,938.80/x
  3. Step 3: Cross multiply
    10,777.28x = 16,143.24 × 4,938.80
  4. Step 4: Simplify right side
    10,777.28x = 79,728,233.71
  5. Step 5: Solve for x
    x = 79,728,233.71/10,777.28
  6. Step 6: Final answer
    x = 7,397.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.