Home / 20,522.09-30,783.14-4,939.72

Finding the Fourth Proportional to 20,522.09, 30,783.14 and 4,939.72

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Solution

The fourth proportional to 20,522.09, 30,783.14 and 4,939.72 is: 7,409.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.09 : 30,783.14 = 4,939.72 : x
  2. Step 2: Convert to fraction form
    20,522.09/30,783.14 = 4,939.72/x
  3. Step 3: Cross multiply
    20,522.09x = 30,783.14 × 4,939.72
  4. Step 4: Simplify right side
    20,522.09x = 152,059,913.71
  5. Step 5: Solve for x
    x = 152,059,913.71/20,522.09
  6. Step 6: Final answer
    x = 7,409.57

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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.