Home / 13,747.62-18,970.12-7,698.20

Finding the Fourth Proportional to 13,747.62, 18,970.12 and 7,698.20

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Solution

The fourth proportional to 13,747.62, 18,970.12 and 7,698.20 is: 10,622.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.62 : 18,970.12 = 7,698.20 : x
  2. Step 2: Convert to fraction form
    13,747.62/18,970.12 = 7,698.20/x
  3. Step 3: Cross multiply
    13,747.62x = 18,970.12 × 7,698.20
  4. Step 4: Simplify right side
    13,747.62x = 146,035,739.29
  5. Step 5: Solve for x
    x = 146,035,739.29/13,747.62
  6. Step 6: Final answer
    x = 10,622.62

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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.