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Finding the Fourth Proportional to 15,140.60, 20,894.52 and 9,473.54

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Solution

The fourth proportional to 15,140.60, 20,894.52 and 9,473.54 is: 13,073.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.60 : 20,894.52 = 9,473.54 : x
  2. Step 2: Convert to fraction form
    15,140.60/20,894.52 = 9,473.54/x
  3. Step 3: Cross multiply
    15,140.60x = 20,894.52 × 9,473.54
  4. Step 4: Simplify right side
    15,140.60x = 197,945,071.00
  5. Step 5: Solve for x
    x = 197,945,071.00/15,140.60
  6. Step 6: Final answer
    x = 13,073.79

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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.