Home / 13,831.62-19,089.30-7,865.16

Finding the Fourth Proportional to 13,831.62, 19,089.30 and 7,865.16

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Solution

The fourth proportional to 13,831.62, 19,089.30 and 7,865.16 is: 10,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.62 : 19,089.30 = 7,865.16 : x
  2. Step 2: Convert to fraction form
    13,831.62/19,089.30 = 7,865.16/x
  3. Step 3: Cross multiply
    13,831.62x = 19,089.30 × 7,865.16
  4. Step 4: Simplify right side
    13,831.62x = 150,140,398.79
  5. Step 5: Solve for x
    x = 150,140,398.79/13,831.62
  6. Step 6: Final answer
    x = 10,854.87

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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.