Home / 12,961.15-17,889.57-8,495.71

Finding the Fourth Proportional to 12,961.15, 17,889.57 and 8,495.71

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Solution

The fourth proportional to 12,961.15, 17,889.57 and 8,495.71 is: 11,726.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.15 : 17,889.57 = 8,495.71 : x
  2. Step 2: Convert to fraction form
    12,961.15/17,889.57 = 8,495.71/x
  3. Step 3: Cross multiply
    12,961.15x = 17,889.57 × 8,495.71
  4. Step 4: Simplify right side
    12,961.15x = 151,984,598.74
  5. Step 5: Solve for x
    x = 151,984,598.74/12,961.15
  6. Step 6: Final answer
    x = 11,726.17

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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.