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Finding the Fourth Proportional to 13,393.42, 18,483.85 and 7,425.64

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Solution

The fourth proportional to 13,393.42, 18,483.85 and 7,425.64 is: 10,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.42 : 18,483.85 = 7,425.64 : x
  2. Step 2: Convert to fraction form
    13,393.42/18,483.85 = 7,425.64/x
  3. Step 3: Cross multiply
    13,393.42x = 18,483.85 × 7,425.64
  4. Step 4: Simplify right side
    13,393.42x = 137,254,406.53
  5. Step 5: Solve for x
    x = 137,254,406.53/13,393.42
  6. Step 6: Final answer
    x = 10,247.90

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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.