Home / 22,479.07-31,020.70-12,406.93

Finding the Fourth Proportional to 22,479.07, 31,020.70 and 12,406.93

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Solution

The fourth proportional to 22,479.07, 31,020.70 and 12,406.93 is: 17,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,479.07 : 31,020.70 = 12,406.93 : x
  2. Step 2: Convert to fraction form
    22,479.07/31,020.70 = 12,406.93/x
  3. Step 3: Cross multiply
    22,479.07x = 31,020.70 × 12,406.93
  4. Step 4: Simplify right side
    22,479.07x = 384,871,653.45
  5. Step 5: Solve for x
    x = 384,871,653.45/22,479.07
  6. Step 6: Final answer
    x = 17,121.33

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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.