Home / 15,609.60-21,539.79-8,896.86

Finding the Fourth Proportional to 15,609.60, 21,539.79 and 8,896.86

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Solution

The fourth proportional to 15,609.60, 21,539.79 and 8,896.86 is: 12,276.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.60 : 21,539.79 = 8,896.86 : x
  2. Step 2: Convert to fraction form
    15,609.60/21,539.79 = 8,896.86/x
  3. Step 3: Cross multiply
    15,609.60x = 21,539.79 × 8,896.86
  4. Step 4: Simplify right side
    15,609.60x = 191,636,496.06
  5. Step 5: Solve for x
    x = 191,636,496.06/15,609.60
  6. Step 6: Final answer
    x = 12,276.84

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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.