Home / 9,669.80-13,343.90-5,421.26

Finding the Fourth Proportional to 9,669.80, 13,343.90 and 5,421.26

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Solution

The fourth proportional to 9,669.80, 13,343.90 and 5,421.26 is: 7,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,669.80 : 13,343.90 = 5,421.26 : x
  2. Step 2: Convert to fraction form
    9,669.80/13,343.90 = 5,421.26/x
  3. Step 3: Cross multiply
    9,669.80x = 13,343.90 × 5,421.26
  4. Step 4: Simplify right side
    9,669.80x = 72,340,751.31
  5. Step 5: Solve for x
    x = 72,340,751.31/9,669.80
  6. Step 6: Final answer
    x = 7,481.10

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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.