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Finding the Fourth Proportional to 28,509, 39,342.48 and 19,100.04

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Solution

The fourth proportional to 28,509, 39,342.48 and 19,100.04 is: 26,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509 : 39,342.48 = 19,100.04 : x
  2. Step 2: Convert to fraction form
    28,509/39,342.48 = 19,100.04/x
  3. Step 3: Cross multiply
    28,509x = 39,342.48 × 19,100.04
  4. Step 4: Simplify right side
    28,509x = 751,442,941.70
  5. Step 5: Solve for x
    x = 751,442,941.70/28,509
  6. Step 6: Final answer
    x = 26,358.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.