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Finding the Fourth Proportional to 13,393.90, 18,483.28 and 7,425.51

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Solution

The fourth proportional to 13,393.90, 18,483.28 and 7,425.51 is: 10,247.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.90 : 18,483.28 = 7,425.51 : x
  2. Step 2: Convert to fraction form
    13,393.90/18,483.28 = 7,425.51/x
  3. Step 3: Cross multiply
    13,393.90x = 18,483.28 × 7,425.51
  4. Step 4: Simplify right side
    13,393.90x = 137,247,780.47
  5. Step 5: Solve for x
    x = 137,247,780.47/13,393.90
  6. Step 6: Final answer
    x = 10,247.04

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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.