Home / 15,847.44-21,869.64-8,774

Finding the Fourth Proportional to 15,847.44, 21,869.64 and 8,774

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Solution

The fourth proportional to 15,847.44, 21,869.64 and 8,774 is: 12,108.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.44 : 21,869.64 = 8,774 : x
  2. Step 2: Convert to fraction form
    15,847.44/21,869.64 = 8,774/x
  3. Step 3: Cross multiply
    15,847.44x = 21,869.64 × 8,774
  4. Step 4: Simplify right side
    15,847.44x = 191,884,221.36
  5. Step 5: Solve for x
    x = 191,884,221.36/15,847.44
  6. Step 6: Final answer
    x = 12,108.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.