Home / 13,116.94-18,101.60-7,148.60

Finding the Fourth Proportional to 13,116.94, 18,101.60 and 7,148.60

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Solution

The fourth proportional to 13,116.94, 18,101.60 and 7,148.60 is: 9,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.94 : 18,101.60 = 7,148.60 : x
  2. Step 2: Convert to fraction form
    13,116.94/18,101.60 = 7,148.60/x
  3. Step 3: Cross multiply
    13,116.94x = 18,101.60 × 7,148.60
  4. Step 4: Simplify right side
    13,116.94x = 129,401,097.76
  5. Step 5: Solve for x
    x = 129,401,097.76/13,116.94
  6. Step 6: Final answer
    x = 9,865.19

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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.