Home / 12,316.57-16,986.95-11,150.17

Finding the Fourth Proportional to 12,316.57, 16,986.95 and 11,150.17

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Solution

The fourth proportional to 12,316.57, 16,986.95 and 11,150.17 is: 15,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.57 : 16,986.95 = 11,150.17 : x
  2. Step 2: Convert to fraction form
    12,316.57/16,986.95 = 11,150.17/x
  3. Step 3: Cross multiply
    12,316.57x = 16,986.95 × 11,150.17
  4. Step 4: Simplify right side
    12,316.57x = 189,407,323.88
  5. Step 5: Solve for x
    x = 189,407,323.88/12,316.57
  6. Step 6: Final answer
    x = 15,378.26

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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.