Home / 15,774.96-21,768.66-8,701.20

Finding the Fourth Proportional to 15,774.96, 21,768.66 and 8,701.20

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Solution

The fourth proportional to 15,774.96, 21,768.66 and 8,701.20 is: 12,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.96 : 21,768.66 = 8,701.20 : x
  2. Step 2: Convert to fraction form
    15,774.96/21,768.66 = 8,701.20/x
  3. Step 3: Cross multiply
    15,774.96x = 21,768.66 × 8,701.20
  4. Step 4: Simplify right side
    15,774.96x = 189,413,464.39
  5. Step 5: Solve for x
    x = 189,413,464.39/15,774.96
  6. Step 6: Final answer
    x = 12,007.22

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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.