Home / 13,506.69-18,639.26-7,538.36

Finding the Fourth Proportional to 13,506.69, 18,639.26 and 7,538.36

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Solution

The fourth proportional to 13,506.69, 18,639.26 and 7,538.36 is: 10,402.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.69 : 18,639.26 = 7,538.36 : x
  2. Step 2: Convert to fraction form
    13,506.69/18,639.26 = 7,538.36/x
  3. Step 3: Cross multiply
    13,506.69x = 18,639.26 × 7,538.36
  4. Step 4: Simplify right side
    13,506.69x = 140,509,380.62
  5. Step 5: Solve for x
    x = 140,509,380.62/13,506.69
  6. Step 6: Final answer
    x = 10,402.95

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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.