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Finding the Fourth Proportional to 13,360, 18,435.28 and 7,390.84

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Solution

The fourth proportional to 13,360, 18,435.28 and 7,390.84 is: 10,198.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360 : 18,435.28 = 7,390.84 : x
  2. Step 2: Convert to fraction form
    13,360/18,435.28 = 7,390.84/x
  3. Step 3: Cross multiply
    13,360x = 18,435.28 × 7,390.84
  4. Step 4: Simplify right side
    13,360x = 136,252,204.84
  5. Step 5: Solve for x
    x = 136,252,204.84/13,360
  6. Step 6: Final answer
    x = 10,198.52

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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.