Home / 13,121.02-19,663.97-7,188.99

Finding the Fourth Proportional to 13,121.02, 19,663.97 and 7,188.99

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Solution

The fourth proportional to 13,121.02, 19,663.97 and 7,188.99 is: 10,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.02 : 19,663.97 = 7,188.99 : x
  2. Step 2: Convert to fraction form
    13,121.02/19,663.97 = 7,188.99/x
  3. Step 3: Cross multiply
    13,121.02x = 19,663.97 × 7,188.99
  4. Step 4: Simplify right side
    13,121.02x = 141,363,974.01
  5. Step 5: Solve for x
    x = 141,363,974.01/13,121.02
  6. Step 6: Final answer
    x = 10,773.85

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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.