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Finding the Fourth Proportional to 20,022.90, 29,978.99 and 15,077.54

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Solution

The fourth proportional to 20,022.90, 29,978.99 and 15,077.54 is: 22,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,022.90 : 29,978.99 = 15,077.54 : x
  2. Step 2: Convert to fraction form
    20,022.90/29,978.99 = 15,077.54/x
  3. Step 3: Cross multiply
    20,022.90x = 29,978.99 × 15,077.54
  4. Step 4: Simplify right side
    20,022.90x = 452,009,434.58
  5. Step 5: Solve for x
    x = 452,009,434.58/20,022.90
  6. Step 6: Final answer
    x = 22,574.63

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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.