Home / 9,869.45-13,619.64-5,393.18

Finding the Fourth Proportional to 9,869.45, 13,619.64 and 5,393.18

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Solution

The fourth proportional to 9,869.45, 13,619.64 and 5,393.18 is: 7,442.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.45 : 13,619.64 = 5,393.18 : x
  2. Step 2: Convert to fraction form
    9,869.45/13,619.64 = 5,393.18/x
  3. Step 3: Cross multiply
    9,869.45x = 13,619.64 × 5,393.18
  4. Step 4: Simplify right side
    9,869.45x = 73,453,170.06
  5. Step 5: Solve for x
    x = 73,453,170.06/9,869.45
  6. Step 6: Final answer
    x = 7,442.48

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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.