Home / 13,116.46-18,100.19-7,148.00

Finding the Fourth Proportional to 13,116.46, 18,100.19 and 7,148.00

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Solution

The fourth proportional to 13,116.46, 18,100.19 and 7,148.00 is: 9,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.46 : 18,100.19 = 7,148.00 : x
  2. Step 2: Convert to fraction form
    13,116.46/18,100.19 = 7,148.00/x
  3. Step 3: Cross multiply
    13,116.46x = 18,100.19 × 7,148.00
  4. Step 4: Simplify right side
    13,116.46x = 129,380,203.37
  5. Step 5: Solve for x
    x = 129,380,203.37/13,116.46
  6. Step 6: Final answer
    x = 9,863.96

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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.