Home / 11,398.93-15,729.77-7,149.81

Finding the Fourth Proportional to 11,398.93, 15,729.77 and 7,149.81

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Solution

The fourth proportional to 11,398.93, 15,729.77 and 7,149.81 is: 9,866.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.93 : 15,729.77 = 7,149.81 : x
  2. Step 2: Convert to fraction form
    11,398.93/15,729.77 = 7,149.81/x
  3. Step 3: Cross multiply
    11,398.93x = 15,729.77 × 7,149.81
  4. Step 4: Simplify right side
    11,398.93x = 112,464,788.19
  5. Step 5: Solve for x
    x = 112,464,788.19/11,398.93
  6. Step 6: Final answer
    x = 9,866.26

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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.