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Finding the Fourth Proportional to 29,280.70, 43,889.56 and 12,648.56

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Solution

The fourth proportional to 29,280.70, 43,889.56 and 12,648.56 is: 18,959.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280.70 : 43,889.56 = 12,648.56 : x
  2. Step 2: Convert to fraction form
    29,280.70/43,889.56 = 12,648.56/x
  3. Step 3: Cross multiply
    29,280.70x = 43,889.56 × 12,648.56
  4. Step 4: Simplify right side
    29,280.70x = 555,139,733.03
  5. Step 5: Solve for x
    x = 555,139,733.03/29,280.70
  6. Step 6: Final answer
    x = 18,959.24

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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.