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Finding the Fourth Proportional to 15,109.58, 20,847.44 and 9,060.77

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Solution

The fourth proportional to 15,109.58, 20,847.44 and 9,060.77 is: 12,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.58 : 20,847.44 = 9,060.77 : x
  2. Step 2: Convert to fraction form
    15,109.58/20,847.44 = 9,060.77/x
  3. Step 3: Cross multiply
    15,109.58x = 20,847.44 × 9,060.77
  4. Step 4: Simplify right side
    15,109.58x = 188,893,709.39
  5. Step 5: Solve for x
    x = 188,893,709.39/15,109.58
  6. Step 6: Final answer
    x = 12,501.59

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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.