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Finding the Fourth Proportional to 19,394.66, 29,091.99 and 15,480.74

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Solution

The fourth proportional to 19,394.66, 29,091.99 and 15,480.74 is: 23,221.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,394.66 : 29,091.99 = 15,480.74 : x
  2. Step 2: Convert to fraction form
    19,394.66/29,091.99 = 15,480.74/x
  3. Step 3: Cross multiply
    19,394.66x = 29,091.99 × 15,480.74
  4. Step 4: Simplify right side
    19,394.66x = 450,365,533.27
  5. Step 5: Solve for x
    x = 450,365,533.27/19,394.66
  6. Step 6: Final answer
    x = 23,221.11

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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.