Home / 15,774.32-21,768.30-8,701.22

Finding the Fourth Proportional to 15,774.32, 21,768.30 and 8,701.22

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Solution

The fourth proportional to 15,774.32, 21,768.30 and 8,701.22 is: 12,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.32 : 21,768.30 = 8,701.22 : x
  2. Step 2: Convert to fraction form
    15,774.32/21,768.30 = 8,701.22/x
  3. Step 3: Cross multiply
    15,774.32x = 21,768.30 × 8,701.22
  4. Step 4: Simplify right side
    15,774.32x = 189,410,767.33
  5. Step 5: Solve for x
    x = 189,410,767.33/15,774.32
  6. Step 6: Final answer
    x = 12,007.54

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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.