Home / 9,869.40-13,619.20-5,393.19

Finding the Fourth Proportional to 9,869.40, 13,619.20 and 5,393.19

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Solution

The fourth proportional to 9,869.40, 13,619.20 and 5,393.19 is: 7,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.40 : 13,619.20 = 5,393.19 : x
  2. Step 2: Convert to fraction form
    9,869.40/13,619.20 = 5,393.19/x
  3. Step 3: Cross multiply
    9,869.40x = 13,619.20 × 5,393.19
  4. Step 4: Simplify right side
    9,869.40x = 73,450,855.21
  5. Step 5: Solve for x
    x = 73,450,855.21/9,869.40
  6. Step 6: Final answer
    x = 7,442.28

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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.