Home / 11,430.39-15,773.44-7,185.81

Finding the Fourth Proportional to 11,430.39, 15,773.44 and 7,185.81

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Solution

The fourth proportional to 11,430.39, 15,773.44 and 7,185.81 is: 9,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.39 : 15,773.44 = 7,185.81 : x
  2. Step 2: Convert to fraction form
    11,430.39/15,773.44 = 7,185.81/x
  3. Step 3: Cross multiply
    11,430.39x = 15,773.44 × 7,185.81
  4. Step 4: Simplify right side
    11,430.39x = 113,344,942.89
  5. Step 5: Solve for x
    x = 113,344,942.89/11,430.39
  6. Step 6: Final answer
    x = 9,916.10

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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.