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Finding the Fourth Proportional to 23,405.76, 35,129.01 and 12,885.48

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Solution

The fourth proportional to 23,405.76, 35,129.01 and 12,885.48 is: 19,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,405.76 : 35,129.01 = 12,885.48 : x
  2. Step 2: Convert to fraction form
    23,405.76/35,129.01 = 12,885.48/x
  3. Step 3: Cross multiply
    23,405.76x = 35,129.01 × 12,885.48
  4. Step 4: Simplify right side
    23,405.76x = 452,654,155.77
  5. Step 5: Solve for x
    x = 452,654,155.77/23,405.76
  6. Step 6: Final answer
    x = 19,339.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.