Home / 18,887.23-28,306.21-7,782.74

Finding the Fourth Proportional to 18,887.23, 28,306.21 and 7,782.74

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Solution

The fourth proportional to 18,887.23, 28,306.21 and 7,782.74 is: 11,663.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.23 : 28,306.21 = 7,782.74 : x
  2. Step 2: Convert to fraction form
    18,887.23/28,306.21 = 7,782.74/x
  3. Step 3: Cross multiply
    18,887.23x = 28,306.21 × 7,782.74
  4. Step 4: Simplify right side
    18,887.23x = 220,299,872.82
  5. Step 5: Solve for x
    x = 220,299,872.82/18,887.23
  6. Step 6: Final answer
    x = 11,663.96

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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.