Home / 12,899.37-19,349.06-8,515.80

Finding the Fourth Proportional to 12,899.37, 19,349.06 and 8,515.80

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Solution

The fourth proportional to 12,899.37, 19,349.06 and 8,515.80 is: 12,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.37 : 19,349.06 = 8,515.80 : x
  2. Step 2: Convert to fraction form
    12,899.37/19,349.06 = 8,515.80/x
  3. Step 3: Cross multiply
    12,899.37x = 19,349.06 × 8,515.80
  4. Step 4: Simplify right side
    12,899.37x = 164,772,725.15
  5. Step 5: Solve for x
    x = 164,772,725.15/12,899.37
  6. Step 6: Final answer
    x = 12,773.70

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Double scale
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Similar ratio
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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.