Home / 9,509.40-13,122.96-5,317.68

Finding the Fourth Proportional to 9,509.40, 13,122.96 and 5,317.68

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Solution

The fourth proportional to 9,509.40, 13,122.96 and 5,317.68 is: 7,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,509.40 : 13,122.96 = 5,317.68 : x
  2. Step 2: Convert to fraction form
    9,509.40/13,122.96 = 5,317.68/x
  3. Step 3: Cross multiply
    9,509.40x = 13,122.96 × 5,317.68
  4. Step 4: Simplify right side
    9,509.40x = 69,783,701.93
  5. Step 5: Solve for x
    x = 69,783,701.93/9,509.40
  6. Step 6: Final answer
    x = 7,338.39

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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.