Home / 15,836.78-21,855.22-8,763.86

Finding the Fourth Proportional to 15,836.78, 21,855.22 and 8,763.86

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Solution

The fourth proportional to 15,836.78, 21,855.22 and 8,763.86 is: 12,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,836.78 : 21,855.22 = 8,763.86 : x
  2. Step 2: Convert to fraction form
    15,836.78/21,855.22 = 8,763.86/x
  3. Step 3: Cross multiply
    15,836.78x = 21,855.22 × 8,763.86
  4. Step 4: Simplify right side
    15,836.78x = 191,536,088.35
  5. Step 5: Solve for x
    x = 191,536,088.35/15,836.78
  6. Step 6: Final answer
    x = 12,094.38

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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.