Home / 12,758.81-17,605.97-11,818.40

Finding the Fourth Proportional to 12,758.81, 17,605.97 and 11,818.40

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Solution

The fourth proportional to 12,758.81, 17,605.97 and 11,818.40 is: 16,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.81 : 17,605.97 = 11,818.40 : x
  2. Step 2: Convert to fraction form
    12,758.81/17,605.97 = 11,818.40/x
  3. Step 3: Cross multiply
    12,758.81x = 17,605.97 × 11,818.40
  4. Step 4: Simplify right side
    12,758.81x = 208,074,395.85
  5. Step 5: Solve for x
    x = 208,074,395.85/12,758.81
  6. Step 6: Final answer
    x = 16,308.29

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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.