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Finding the Fourth Proportional to 15,695.21, 23,650.78 and 12,982.93

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Solution

The fourth proportional to 15,695.21, 23,650.78 and 12,982.93 is: 19,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.21 : 23,650.78 = 12,982.93 : x
  2. Step 2: Convert to fraction form
    15,695.21/23,650.78 = 12,982.93/x
  3. Step 3: Cross multiply
    15,695.21x = 23,650.78 × 12,982.93
  4. Step 4: Simplify right side
    15,695.21x = 307,056,302.93
  5. Step 5: Solve for x
    x = 307,056,302.93/15,695.21
  6. Step 6: Final answer
    x = 19,563.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.