Home / 13,393.20-18,483.60-7,425.40

Finding the Fourth Proportional to 13,393.20, 18,483.60 and 7,425.40

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Solution

The fourth proportional to 13,393.20, 18,483.60 and 7,425.40 is: 10,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.20 : 18,483.60 = 7,425.40 : x
  2. Step 2: Convert to fraction form
    13,393.20/18,483.60 = 7,425.40/x
  3. Step 3: Cross multiply
    13,393.20x = 18,483.60 × 7,425.40
  4. Step 4: Simplify right side
    13,393.20x = 137,248,123.44
  5. Step 5: Solve for x
    x = 137,248,123.44/13,393.20
  6. Step 6: Final answer
    x = 10,247.60

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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.