Home / 12,513.80-17,271.96-8,265.62

Finding the Fourth Proportional to 12,513.80, 17,271.96 and 8,265.62

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Solution

The fourth proportional to 12,513.80, 17,271.96 and 8,265.62 is: 11,408.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.80 : 17,271.96 = 8,265.62 : x
  2. Step 2: Convert to fraction form
    12,513.80/17,271.96 = 8,265.62/x
  3. Step 3: Cross multiply
    12,513.80x = 17,271.96 × 8,265.62
  4. Step 4: Simplify right side
    12,513.80x = 142,763,458.02
  5. Step 5: Solve for x
    x = 142,763,458.02/12,513.80
  6. Step 6: Final answer
    x = 11,408.48

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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.