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Finding the Fourth Proportional to 13,306.59, 18,361.08 and 7,641.58

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Solution

The fourth proportional to 13,306.59, 18,361.08 and 7,641.58 is: 10,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.59 : 18,361.08 = 7,641.58 : x
  2. Step 2: Convert to fraction form
    13,306.59/18,361.08 = 7,641.58/x
  3. Step 3: Cross multiply
    13,306.59x = 18,361.08 × 7,641.58
  4. Step 4: Simplify right side
    13,306.59x = 140,307,661.71
  5. Step 5: Solve for x
    x = 140,307,661.71/13,306.59
  6. Step 6: Final answer
    x = 10,544.22

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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.