Home / 13,831.48-19,086.82-8,462.84

Finding the Fourth Proportional to 13,831.48, 19,086.82 and 8,462.84

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Solution

The fourth proportional to 13,831.48, 19,086.82 and 8,462.84 is: 11,678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.48 : 19,086.82 = 8,462.84 : x
  2. Step 2: Convert to fraction form
    13,831.48/19,086.82 = 8,462.84/x
  3. Step 3: Cross multiply
    13,831.48x = 19,086.82 × 8,462.84
  4. Step 4: Simplify right side
    13,831.48x = 161,528,703.77
  5. Step 5: Solve for x
    x = 161,528,703.77/13,831.48
  6. Step 6: Final answer
    x = 11,678.34

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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.