Home / 15,774.45-21,770.28-11,788.62

Finding the Fourth Proportional to 15,774.45, 21,770.28 and 11,788.62

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Solution

The fourth proportional to 15,774.45, 21,770.28 and 11,788.62 is: 16,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.45 : 21,770.28 = 11,788.62 : x
  2. Step 2: Convert to fraction form
    15,774.45/21,770.28 = 11,788.62/x
  3. Step 3: Cross multiply
    15,774.45x = 21,770.28 × 11,788.62
  4. Step 4: Simplify right side
    15,774.45x = 256,641,558.21
  5. Step 5: Solve for x
    x = 256,641,558.21/15,774.45
  6. Step 6: Final answer
    x = 16,269.45

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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.