Home / 9,669.09-13,343.49-5,420.37

Finding the Fourth Proportional to 9,669.09, 13,343.49 and 5,420.37

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Solution

The fourth proportional to 9,669.09, 13,343.49 and 5,420.37 is: 7,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,669.09 : 13,343.49 = 5,420.37 : x
  2. Step 2: Convert to fraction form
    9,669.09/13,343.49 = 5,420.37/x
  3. Step 3: Cross multiply
    9,669.09x = 13,343.49 × 5,420.37
  4. Step 4: Simplify right side
    9,669.09x = 72,326,652.89
  5. Step 5: Solve for x
    x = 72,326,652.89/9,669.09
  6. Step 6: Final answer
    x = 7,480.19

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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.