Home / 9,869.54-13,619.38-5,392.40

Finding the Fourth Proportional to 9,869.54, 13,619.38 and 5,392.40

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Solution

The fourth proportional to 9,869.54, 13,619.38 and 5,392.40 is: 7,441.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.54 : 13,619.38 = 5,392.40 : x
  2. Step 2: Convert to fraction form
    9,869.54/13,619.38 = 5,392.40/x
  3. Step 3: Cross multiply
    9,869.54x = 13,619.38 × 5,392.40
  4. Step 4: Simplify right side
    9,869.54x = 73,441,110.66
  5. Step 5: Solve for x
    x = 73,441,110.66/9,869.54
  6. Step 6: Final answer
    x = 7,441.19

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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.