Home / 9,869.40-13,620.70-5,393.82

Finding the Fourth Proportional to 9,869.40, 13,620.70 and 5,393.82

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Solution

The fourth proportional to 9,869.40, 13,620.70 and 5,393.82 is: 7,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.40 : 13,620.70 = 5,393.82 : x
  2. Step 2: Convert to fraction form
    9,869.40/13,620.70 = 5,393.82/x
  3. Step 3: Cross multiply
    9,869.40x = 13,620.70 × 5,393.82
  4. Step 4: Simplify right side
    9,869.40x = 73,467,604.07
  5. Step 5: Solve for x
    x = 73,467,604.07/9,869.40
  6. Step 6: Final answer
    x = 7,443.98

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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.