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Finding the Fourth Proportional to 17,135.70, 25,703.55 and 11,886.90

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Solution

The fourth proportional to 17,135.70, 25,703.55 and 11,886.90 is: 17,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,135.70 : 25,703.55 = 11,886.90 : x
  2. Step 2: Convert to fraction form
    17,135.70/25,703.55 = 11,886.90/x
  3. Step 3: Cross multiply
    17,135.70x = 25,703.55 × 11,886.90
  4. Step 4: Simplify right side
    17,135.70x = 305,535,528.50
  5. Step 5: Solve for x
    x = 305,535,528.50/17,135.70
  6. Step 6: Final answer
    x = 17,830.35

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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.