Home / 13,617.63-18,795.56-8,316.90

Finding the Fourth Proportional to 13,617.63, 18,795.56 and 8,316.90

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Solution

The fourth proportional to 13,617.63, 18,795.56 and 8,316.90 is: 11,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.63 : 18,795.56 = 8,316.90 : x
  2. Step 2: Convert to fraction form
    13,617.63/18,795.56 = 8,316.90/x
  3. Step 3: Cross multiply
    13,617.63x = 18,795.56 × 8,316.90
  4. Step 4: Simplify right side
    13,617.63x = 156,320,792.96
  5. Step 5: Solve for x
    x = 156,320,792.96/13,617.63
  6. Step 6: Final answer
    x = 11,479.30

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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.