Home / 19,851.28-29,776.74-8,757.98

Finding the Fourth Proportional to 19,851.28, 29,776.74 and 8,757.98

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Solution

The fourth proportional to 19,851.28, 29,776.74 and 8,757.98 is: 13,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.28 : 29,776.74 = 8,757.98 : x
  2. Step 2: Convert to fraction form
    19,851.28/29,776.74 = 8,757.98/x
  3. Step 3: Cross multiply
    19,851.28x = 29,776.74 × 8,757.98
  4. Step 4: Simplify right side
    19,851.28x = 260,783,911.66
  5. Step 5: Solve for x
    x = 260,783,911.66/19,851.28
  6. Step 6: Final answer
    x = 13,136.88

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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.