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Finding the Fourth Proportional to 25,758.78, 35,541.09 and 18,672.90

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Solution

The fourth proportional to 25,758.78, 35,541.09 and 18,672.90 is: 25,764.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,758.78 : 35,541.09 = 18,672.90 : x
  2. Step 2: Convert to fraction form
    25,758.78/35,541.09 = 18,672.90/x
  3. Step 3: Cross multiply
    25,758.78x = 35,541.09 × 18,672.90
  4. Step 4: Simplify right side
    25,758.78x = 663,655,219.46
  5. Step 5: Solve for x
    x = 663,655,219.46/25,758.78
  6. Step 6: Final answer
    x = 25,764.23

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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.