Home / 19,509.40-29,220.90-7,816.60

Finding the Fourth Proportional to 19,509.40, 29,220.90 and 7,816.60

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Solution

The fourth proportional to 19,509.40, 29,220.90 and 7,816.60 is: 11,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.40 : 29,220.90 = 7,816.60 : x
  2. Step 2: Convert to fraction form
    19,509.40/29,220.90 = 7,816.60/x
  3. Step 3: Cross multiply
    19,509.40x = 29,220.90 × 7,816.60
  4. Step 4: Simplify right side
    19,509.40x = 228,408,086.94
  5. Step 5: Solve for x
    x = 228,408,086.94/19,509.40
  6. Step 6: Final answer
    x = 11,707.59

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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.