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Finding the Fourth Proportional to 28,887.70, 43,331.55 and 13,335.70

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Solution

The fourth proportional to 28,887.70, 43,331.55 and 13,335.70 is: 20,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.70 : 43,331.55 = 13,335.70 : x
  2. Step 2: Convert to fraction form
    28,887.70/43,331.55 = 13,335.70/x
  3. Step 3: Cross multiply
    28,887.70x = 43,331.55 × 13,335.70
  4. Step 4: Simplify right side
    28,887.70x = 577,856,551.34
  5. Step 5: Solve for x
    x = 577,856,551.34/28,887.70
  6. Step 6: Final answer
    x = 20,003.55

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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.