Home / 9,669.18-13,343.58-5,420.64

Finding the Fourth Proportional to 9,669.18, 13,343.58 and 5,420.64

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Solution

The fourth proportional to 9,669.18, 13,343.58 and 5,420.64 is: 7,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,669.18 : 13,343.58 = 5,420.64 : x
  2. Step 2: Convert to fraction form
    9,669.18/13,343.58 = 5,420.64/x
  3. Step 3: Cross multiply
    9,669.18x = 13,343.58 × 5,420.64
  4. Step 4: Simplify right side
    9,669.18x = 72,330,743.49
  5. Step 5: Solve for x
    x = 72,330,743.49/9,669.18
  6. Step 6: Final answer
    x = 7,480.55

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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.