Home / 12,899.39-19,349.08-8,515.82

Finding the Fourth Proportional to 12,899.39, 19,349.08 and 8,515.82

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Solution

The fourth proportional to 12,899.39, 19,349.08 and 8,515.82 is: 12,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.39 : 19,349.08 = 8,515.82 : x
  2. Step 2: Convert to fraction form
    12,899.39/19,349.08 = 8,515.82/x
  3. Step 3: Cross multiply
    12,899.39x = 19,349.08 × 8,515.82
  4. Step 4: Simplify right side
    12,899.39x = 164,773,164.41
  5. Step 5: Solve for x
    x = 164,773,164.41/12,899.39
  6. Step 6: Final answer
    x = 12,773.72

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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.