Home / 15,877.08-21,911.64-8,805.78

Finding the Fourth Proportional to 15,877.08, 21,911.64 and 8,805.78

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Solution

The fourth proportional to 15,877.08, 21,911.64 and 8,805.78 is: 12,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.08 : 21,911.64 = 8,805.78 : x
  2. Step 2: Convert to fraction form
    15,877.08/21,911.64 = 8,805.78/x
  3. Step 3: Cross multiply
    15,877.08x = 21,911.64 × 8,805.78
  4. Step 4: Simplify right side
    15,877.08x = 192,949,081.28
  5. Step 5: Solve for x
    x = 192,949,081.28/15,877.08
  6. Step 6: Final answer
    x = 12,152.68

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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.