Home / 13,604.72-18,772.70-7,636.32

Finding the Fourth Proportional to 13,604.72, 18,772.70 and 7,636.32

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Solution

The fourth proportional to 13,604.72, 18,772.70 and 7,636.32 is: 10,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.72 : 18,772.70 = 7,636.32 : x
  2. Step 2: Convert to fraction form
    13,604.72/18,772.70 = 7,636.32/x
  3. Step 3: Cross multiply
    13,604.72x = 18,772.70 × 7,636.32
  4. Step 4: Simplify right side
    13,604.72x = 143,354,306.28
  5. Step 5: Solve for x
    x = 143,354,306.28/13,604.72
  6. Step 6: Final answer
    x = 10,537.10

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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.