Home / 13,164.17-18,148.79-8,440.25

Finding the Fourth Proportional to 13,164.17, 18,148.79 and 8,440.25

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Solution

The fourth proportional to 13,164.17, 18,148.79 and 8,440.25 is: 11,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.17 : 18,148.79 = 8,440.25 : x
  2. Step 2: Convert to fraction form
    13,164.17/18,148.79 = 8,440.25/x
  3. Step 3: Cross multiply
    13,164.17x = 18,148.79 × 8,440.25
  4. Step 4: Simplify right side
    13,164.17x = 153,180,255.15
  5. Step 5: Solve for x
    x = 153,180,255.15/13,164.17
  6. Step 6: Final answer
    x = 11,636.15

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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.