Home / 10,520.16-15,777.51-3,122.88

Finding the Fourth Proportional to 10,520.16, 15,777.51 and 3,122.88

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Solution

The fourth proportional to 10,520.16, 15,777.51 and 3,122.88 is: 4,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.16 : 15,777.51 = 3,122.88 : x
  2. Step 2: Convert to fraction form
    10,520.16/15,777.51 = 3,122.88/x
  3. Step 3: Cross multiply
    10,520.16x = 15,777.51 × 3,122.88
  4. Step 4: Simplify right side
    10,520.16x = 49,271,270.43
  5. Step 5: Solve for x
    x = 49,271,270.43/10,520.16
  6. Step 6: Final answer
    x = 4,683.51

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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.