Home / 13,490.75-20,223.80-4,720.88

Finding the Fourth Proportional to 13,490.75, 20,223.80 and 4,720.88

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Solution

The fourth proportional to 13,490.75, 20,223.80 and 4,720.88 is: 7,077.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.75 : 20,223.80 = 4,720.88 : x
  2. Step 2: Convert to fraction form
    13,490.75/20,223.80 = 4,720.88/x
  3. Step 3: Cross multiply
    13,490.75x = 20,223.80 × 4,720.88
  4. Step 4: Simplify right side
    13,490.75x = 95,474,195.31
  5. Step 5: Solve for x
    x = 95,474,195.31/13,490.75
  6. Step 6: Final answer
    x = 7,077.01

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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.