Home / 15,586.75-21,508.91-8,872.36

Finding the Fourth Proportional to 15,586.75, 21,508.91 and 8,872.36

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Solution

The fourth proportional to 15,586.75, 21,508.91 and 8,872.36 is: 12,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.75 : 21,508.91 = 8,872.36 : x
  2. Step 2: Convert to fraction form
    15,586.75/21,508.91 = 8,872.36/x
  3. Step 3: Cross multiply
    15,586.75x = 21,508.91 × 8,872.36
  4. Step 4: Simplify right side
    15,586.75x = 190,834,727.86
  5. Step 5: Solve for x
    x = 190,834,727.86/15,586.75
  6. Step 6: Final answer
    x = 12,243.39

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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.