Home / 15,734.08-21,712.80-8,660.32

Finding the Fourth Proportional to 15,734.08, 21,712.80 and 8,660.32

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Solution

The fourth proportional to 15,734.08, 21,712.80 and 8,660.32 is: 11,951.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,734.08 : 21,712.80 = 8,660.32 : x
  2. Step 2: Convert to fraction form
    15,734.08/21,712.80 = 8,660.32/x
  3. Step 3: Cross multiply
    15,734.08x = 21,712.80 × 8,660.32
  4. Step 4: Simplify right side
    15,734.08x = 188,039,796.10
  5. Step 5: Solve for x
    x = 188,039,796.10/15,734.08
  6. Step 6: Final answer
    x = 11,951.11

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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.