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Finding the Fourth Proportional to 19,680.48, 29,495.94 and 15,503.94

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Solution

The fourth proportional to 19,680.48, 29,495.94 and 15,503.94 is: 23,236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.48 : 29,495.94 = 15,503.94 : x
  2. Step 2: Convert to fraction form
    19,680.48/29,495.94 = 15,503.94/x
  3. Step 3: Cross multiply
    19,680.48x = 29,495.94 × 15,503.94
  4. Step 4: Simplify right side
    19,680.48x = 457,303,284.00
  5. Step 5: Solve for x
    x = 457,303,284.00/19,680.48
  6. Step 6: Final answer
    x = 23,236.39

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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.