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Finding the Fourth Proportional to 19,191.21, 28,784.54 and 6,710.28

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Solution

The fourth proportional to 19,191.21, 28,784.54 and 6,710.28 is: 10,064.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.21 : 28,784.54 = 6,710.28 : x
  2. Step 2: Convert to fraction form
    19,191.21/28,784.54 = 6,710.28/x
  3. Step 3: Cross multiply
    19,191.21x = 28,784.54 × 6,710.28
  4. Step 4: Simplify right side
    19,191.21x = 193,152,289.52
  5. Step 5: Solve for x
    x = 193,152,289.52/19,191.21
  6. Step 6: Final answer
    x = 10,064.62

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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.