Home / 20,720.70-31,093.20-7,574.40

Finding the Fourth Proportional to 20,720.70, 31,093.20 and 7,574.40

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Solution

The fourth proportional to 20,720.70, 31,093.20 and 7,574.40 is: 11,366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.70 : 31,093.20 = 7,574.40 : x
  2. Step 2: Convert to fraction form
    20,720.70/31,093.20 = 7,574.40/x
  3. Step 3: Cross multiply
    20,720.70x = 31,093.20 × 7,574.40
  4. Step 4: Simplify right side
    20,720.70x = 235,512,334.08
  5. Step 5: Solve for x
    x = 235,512,334.08/20,720.70
  6. Step 6: Final answer
    x = 11,366.04

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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.