Home / 22,343.41-30,831.54-13,390.66

Finding the Fourth Proportional to 22,343.41, 30,831.54 and 13,390.66

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Solution

The fourth proportional to 22,343.41, 30,831.54 and 13,390.66 is: 18,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,343.41 : 30,831.54 = 13,390.66 : x
  2. Step 2: Convert to fraction form
    22,343.41/30,831.54 = 13,390.66/x
  3. Step 3: Cross multiply
    22,343.41x = 30,831.54 × 13,390.66
  4. Step 4: Simplify right side
    22,343.41x = 412,854,669.42
  5. Step 5: Solve for x
    x = 412,854,669.42/22,343.41
  6. Step 6: Final answer
    x = 18,477.69

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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.