Home / 9,578.86-13,218.66-5,330.21

Finding the Fourth Proportional to 9,578.86, 13,218.66 and 5,330.21

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Solution

The fourth proportional to 9,578.86, 13,218.66 and 5,330.21 is: 7,355.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,578.86 : 13,218.66 = 5,330.21 : x
  2. Step 2: Convert to fraction form
    9,578.86/13,218.66 = 5,330.21/x
  3. Step 3: Cross multiply
    9,578.86x = 13,218.66 × 5,330.21
  4. Step 4: Simplify right side
    9,578.86x = 70,458,167.63
  5. Step 5: Solve for x
    x = 70,458,167.63/9,578.86
  6. Step 6: Final answer
    x = 7,355.59

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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.