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Finding the Fourth Proportional to 19,008.59, 28,495.13 and 7,908.21

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Solution

The fourth proportional to 19,008.59, 28,495.13 and 7,908.21 is: 11,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.59 : 28,495.13 = 7,908.21 : x
  2. Step 2: Convert to fraction form
    19,008.59/28,495.13 = 7,908.21/x
  3. Step 3: Cross multiply
    19,008.59x = 28,495.13 × 7,908.21
  4. Step 4: Simplify right side
    19,008.59x = 225,345,432.48
  5. Step 5: Solve for x
    x = 225,345,432.48/19,008.59
  6. Step 6: Final answer
    x = 11,854.93

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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.