Home / 13,772.98-20,614.74-7,439.05

Finding the Fourth Proportional to 13,772.98, 20,614.74 and 7,439.05

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Solution

The fourth proportional to 13,772.98, 20,614.74 and 7,439.05 is: 11,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.98 : 20,614.74 = 7,439.05 : x
  2. Step 2: Convert to fraction form
    13,772.98/20,614.74 = 7,439.05/x
  3. Step 3: Cross multiply
    13,772.98x = 20,614.74 × 7,439.05
  4. Step 4: Simplify right side
    13,772.98x = 153,354,081.60
  5. Step 5: Solve for x
    x = 153,354,081.60/13,772.98
  6. Step 6: Final answer
    x = 11,134.42

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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.