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Finding the Fourth Proportional to 25,751.42, 35,553.02 and 19,771.20

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Solution

The fourth proportional to 25,751.42, 35,553.02 and 19,771.20 is: 27,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,751.42 : 35,553.02 = 19,771.20 : x
  2. Step 2: Convert to fraction form
    25,751.42/35,553.02 = 19,771.20/x
  3. Step 3: Cross multiply
    25,751.42x = 35,553.02 × 19,771.20
  4. Step 4: Simplify right side
    25,751.42x = 702,925,869.02
  5. Step 5: Solve for x
    x = 702,925,869.02/25,751.42
  6. Step 6: Final answer
    x = 27,296.59

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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.