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Finding the Fourth Proportional to 19,285.99, 28,945.42 and 7,607.41

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Solution

The fourth proportional to 19,285.99, 28,945.42 and 7,607.41 is: 11,417.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.99 : 28,945.42 = 7,607.41 : x
  2. Step 2: Convert to fraction form
    19,285.99/28,945.42 = 7,607.41/x
  3. Step 3: Cross multiply
    19,285.99x = 28,945.42 × 7,607.41
  4. Step 4: Simplify right side
    19,285.99x = 220,199,494.80
  5. Step 5: Solve for x
    x = 220,199,494.80/19,285.99
  6. Step 6: Final answer
    x = 11,417.59

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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.