Home / 12,866.10-19,331.55-8,188.35

Finding the Fourth Proportional to 12,866.10, 19,331.55 and 8,188.35

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Solution

The fourth proportional to 12,866.10, 19,331.55 and 8,188.35 is: 12,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.10 : 19,331.55 = 8,188.35 : x
  2. Step 2: Convert to fraction form
    12,866.10/19,331.55 = 8,188.35/x
  3. Step 3: Cross multiply
    12,866.10x = 19,331.55 × 8,188.35
  4. Step 4: Simplify right side
    12,866.10x = 158,293,497.44
  5. Step 5: Solve for x
    x = 158,293,497.44/12,866.10
  6. Step 6: Final answer
    x = 12,303.15

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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.