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Finding the Fourth Proportional to 25,953.52, 35,816.58 and 15,881.78

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Solution

The fourth proportional to 25,953.52, 35,816.58 and 15,881.78 is: 21,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.52 : 35,816.58 = 15,881.78 : x
  2. Step 2: Convert to fraction form
    25,953.52/35,816.58 = 15,881.78/x
  3. Step 3: Cross multiply
    25,953.52x = 35,816.58 × 15,881.78
  4. Step 4: Simplify right side
    25,953.52x = 568,831,043.91
  5. Step 5: Solve for x
    x = 568,831,043.91/25,953.52
  6. Step 6: Final answer
    x = 21,917.30

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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.