Home / 10,774.90-16,159.05-8,661.51

Finding the Fourth Proportional to 10,774.90, 16,159.05 and 8,661.51

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Solution

The fourth proportional to 10,774.90, 16,159.05 and 8,661.51 is: 12,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,774.90 : 16,159.05 = 8,661.51 : x
  2. Step 2: Convert to fraction form
    10,774.90/16,159.05 = 8,661.51/x
  3. Step 3: Cross multiply
    10,774.90x = 16,159.05 × 8,661.51
  4. Step 4: Simplify right side
    10,774.90x = 139,961,773.17
  5. Step 5: Solve for x
    x = 139,961,773.17/10,774.90
  6. Step 6: Final answer
    x = 12,989.61

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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.