Home / 12,220.06-18,288.54-7,543.02

Finding the Fourth Proportional to 12,220.06, 18,288.54 and 7,543.02

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Solution

The fourth proportional to 12,220.06, 18,288.54 and 7,543.02 is: 11,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.06 : 18,288.54 = 7,543.02 : x
  2. Step 2: Convert to fraction form
    12,220.06/18,288.54 = 7,543.02/x
  3. Step 3: Cross multiply
    12,220.06x = 18,288.54 × 7,543.02
  4. Step 4: Simplify right side
    12,220.06x = 137,950,822.99
  5. Step 5: Solve for x
    x = 137,950,822.99/12,220.06
  6. Step 6: Final answer
    x = 11,288.88

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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.