Home / 13,390.74-18,488.52-8,355.96

Finding the Fourth Proportional to 13,390.74, 18,488.52 and 8,355.96

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Solution

The fourth proportional to 13,390.74, 18,488.52 and 8,355.96 is: 11,537.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.74 : 18,488.52 = 8,355.96 : x
  2. Step 2: Convert to fraction form
    13,390.74/18,488.52 = 8,355.96/x
  3. Step 3: Cross multiply
    13,390.74x = 18,488.52 × 8,355.96
  4. Step 4: Simplify right side
    13,390.74x = 154,489,333.58
  5. Step 5: Solve for x
    x = 154,489,333.58/13,390.74
  6. Step 6: Final answer
    x = 11,537.03

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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.