Home / 20,578.19-30,863.70-5,783.59

Finding the Fourth Proportional to 20,578.19, 30,863.70 and 5,783.59

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Solution

The fourth proportional to 20,578.19, 30,863.70 and 5,783.59 is: 8,674.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.19 : 30,863.70 = 5,783.59 : x
  2. Step 2: Convert to fraction form
    20,578.19/30,863.70 = 5,783.59/x
  3. Step 3: Cross multiply
    20,578.19x = 30,863.70 × 5,783.59
  4. Step 4: Simplify right side
    20,578.19x = 178,502,957.46
  5. Step 5: Solve for x
    x = 178,502,957.46/20,578.19
  6. Step 6: Final answer
    x = 8,674.38

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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.