Home / 12,728.02-19,099.47-5,331.85

Finding the Fourth Proportional to 12,728.02, 19,099.47 and 5,331.85

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Solution

The fourth proportional to 12,728.02, 19,099.47 and 5,331.85 is: 8,000.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.02 : 19,099.47 = 5,331.85 : x
  2. Step 2: Convert to fraction form
    12,728.02/19,099.47 = 5,331.85/x
  3. Step 3: Cross multiply
    12,728.02x = 19,099.47 × 5,331.85
  4. Step 4: Simplify right side
    12,728.02x = 101,835,509.12
  5. Step 5: Solve for x
    x = 101,835,509.12/12,728.02
  6. Step 6: Final answer
    x = 8,000.89

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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.