Home / 12,758.90-17,615.85-11,410.31

Finding the Fourth Proportional to 12,758.90, 17,615.85 and 11,410.31

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Solution

The fourth proportional to 12,758.90, 17,615.85 and 11,410.31 is: 15,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.90 : 17,615.85 = 11,410.31 : x
  2. Step 2: Convert to fraction form
    12,758.90/17,615.85 = 11,410.31/x
  3. Step 3: Cross multiply
    12,758.90x = 17,615.85 × 11,410.31
  4. Step 4: Simplify right side
    12,758.90x = 201,002,309.41
  5. Step 5: Solve for x
    x = 201,002,309.41/12,758.90
  6. Step 6: Final answer
    x = 15,753.89

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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.