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Finding the Fourth Proportional to 19,008.30, 28,519.20 and 19,008.30

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Solution

The fourth proportional to 19,008.30, 28,519.20 and 19,008.30 is: 28,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.30 : 28,519.20 = 19,008.30 : x
  2. Step 2: Convert to fraction form
    19,008.30/28,519.20 = 19,008.30/x
  3. Step 3: Cross multiply
    19,008.30x = 28,519.20 × 19,008.30
  4. Step 4: Simplify right side
    19,008.30x = 542,101,509.36
  5. Step 5: Solve for x
    x = 542,101,509.36/19,008.30
  6. Step 6: Final answer
    x = 28,519.20

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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.