Home / 15,837.28-21,855.90-8,764.36

Finding the Fourth Proportional to 15,837.28, 21,855.90 and 8,764.36

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Solution

The fourth proportional to 15,837.28, 21,855.90 and 8,764.36 is: 12,095.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837.28 : 21,855.90 = 8,764.36 : x
  2. Step 2: Convert to fraction form
    15,837.28/21,855.90 = 8,764.36/x
  3. Step 3: Cross multiply
    15,837.28x = 21,855.90 × 8,764.36
  4. Step 4: Simplify right side
    15,837.28x = 191,552,975.72
  5. Step 5: Solve for x
    x = 191,552,975.72/15,837.28
  6. Step 6: Final answer
    x = 12,095.07

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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.