Home / 15,774.96-21,770.52-9,150.96

Finding the Fourth Proportional to 15,774.96, 21,770.52 and 9,150.96

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Solution

The fourth proportional to 15,774.96, 21,770.52 and 9,150.96 is: 12,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.96 : 21,770.52 = 9,150.96 : x
  2. Step 2: Convert to fraction form
    15,774.96/21,770.52 = 9,150.96/x
  3. Step 3: Cross multiply
    15,774.96x = 21,770.52 × 9,150.96
  4. Step 4: Simplify right side
    15,774.96x = 199,221,157.70
  5. Step 5: Solve for x
    x = 199,221,157.70/15,774.96
  6. Step 6: Final answer
    x = 12,628.95

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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.