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Finding the Fourth Proportional to 25,703.79, 35,469.28 and 15,630.83

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Solution

The fourth proportional to 25,703.79, 35,469.28 and 15,630.83 is: 21,569.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,703.79 : 35,469.28 = 15,630.83 : x
  2. Step 2: Convert to fraction form
    25,703.79/35,469.28 = 15,630.83/x
  3. Step 3: Cross multiply
    25,703.79x = 35,469.28 × 15,630.83
  4. Step 4: Simplify right side
    25,703.79x = 554,414,285.90
  5. Step 5: Solve for x
    x = 554,414,285.90/25,703.79
  6. Step 6: Final answer
    x = 21,569.36

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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.