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Finding the Fourth Proportional to 15,344.60, 21,511.60 and 15,344.60

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Solution

The fourth proportional to 15,344.60, 21,511.60 and 15,344.60 is: 21,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.60 : 21,511.60 = 15,344.60 : x
  2. Step 2: Convert to fraction form
    15,344.60/21,511.60 = 15,344.60/x
  3. Step 3: Cross multiply
    15,344.60x = 21,511.60 × 15,344.60
  4. Step 4: Simplify right side
    15,344.60x = 330,086,897.36
  5. Step 5: Solve for x
    x = 330,086,897.36/15,344.60
  6. Step 6: Final answer
    x = 21,511.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.