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Finding the Fourth Proportional to 17,124.35, 25,686.17 and 7,890.35

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Solution

The fourth proportional to 17,124.35, 25,686.17 and 7,890.35 is: 11,835.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,124.35 : 25,686.17 = 7,890.35 : x
  2. Step 2: Convert to fraction form
    17,124.35/25,686.17 = 7,890.35/x
  3. Step 3: Cross multiply
    17,124.35x = 25,686.17 × 7,890.35
  4. Step 4: Simplify right side
    17,124.35x = 202,672,832.01
  5. Step 5: Solve for x
    x = 202,672,832.01/17,124.35
  6. Step 6: Final answer
    x = 11,835.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.