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Finding the Fourth Proportional to 15,358, 21,194.04 and 9,070.48

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Solution

The fourth proportional to 15,358, 21,194.04 and 9,070.48 is: 12,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358 : 21,194.04 = 9,070.48 : x
  2. Step 2: Convert to fraction form
    15,358/21,194.04 = 9,070.48/x
  3. Step 3: Cross multiply
    15,358x = 21,194.04 × 9,070.48
  4. Step 4: Simplify right side
    15,358x = 192,240,115.94
  5. Step 5: Solve for x
    x = 192,240,115.94/15,358
  6. Step 6: Final answer
    x = 12,517.26

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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.