Home / 13,147.16-19,698.30-7,229.01

Finding the Fourth Proportional to 13,147.16, 19,698.30 and 7,229.01

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Solution

The fourth proportional to 13,147.16, 19,698.30 and 7,229.01 is: 10,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.16 : 19,698.30 = 7,229.01 : x
  2. Step 2: Convert to fraction form
    13,147.16/19,698.30 = 7,229.01/x
  3. Step 3: Cross multiply
    13,147.16x = 19,698.30 × 7,229.01
  4. Step 4: Simplify right side
    13,147.16x = 142,399,160.92
  5. Step 5: Solve for x
    x = 142,399,160.92/13,147.16
  6. Step 6: Final answer
    x = 10,831.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.