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Finding the Fourth Proportional to 30,615.93, 45,943.47 and 19,530.54

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Solution

The fourth proportional to 30,615.93, 45,943.47 and 19,530.54 is: 29,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.93 : 45,943.47 = 19,530.54 : x
  2. Step 2: Convert to fraction form
    30,615.93/45,943.47 = 19,530.54/x
  3. Step 3: Cross multiply
    30,615.93x = 45,943.47 × 19,530.54
  4. Step 4: Simplify right side
    30,615.93x = 897,300,778.57
  5. Step 5: Solve for x
    x = 897,300,778.57/30,615.93
  6. Step 6: Final answer
    x = 29,308.30

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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.