Home / 15,535-21,439.92-8,822.44

Finding the Fourth Proportional to 15,535, 21,439.92 and 8,822.44

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Solution

The fourth proportional to 15,535, 21,439.92 and 8,822.44 is: 12,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535 : 21,439.92 = 8,822.44 : x
  2. Step 2: Convert to fraction form
    15,535/21,439.92 = 8,822.44/x
  3. Step 3: Cross multiply
    15,535x = 21,439.92 × 8,822.44
  4. Step 4: Simplify right side
    15,535x = 189,152,407.80
  5. Step 5: Solve for x
    x = 189,152,407.80/15,535
  6. Step 6: Final answer
    x = 12,175.89

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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.