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Finding the Fourth Proportional to 15,149.44, 20,894.40 and 9,845.98

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Solution

The fourth proportional to 15,149.44, 20,894.40 and 9,845.98 is: 13,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.44 : 20,894.40 = 9,845.98 : x
  2. Step 2: Convert to fraction form
    15,149.44/20,894.40 = 9,845.98/x
  3. Step 3: Cross multiply
    15,149.44x = 20,894.40 × 9,845.98
  4. Step 4: Simplify right side
    15,149.44x = 205,725,844.51
  5. Step 5: Solve for x
    x = 205,725,844.51/15,149.44
  6. Step 6: Final answer
    x = 13,579.77

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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.