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Finding the Fourth Proportional to 28,906.70, 43,360.05 and 13,354.70

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Solution

The fourth proportional to 28,906.70, 43,360.05 and 13,354.70 is: 20,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.70 : 43,360.05 = 13,354.70 : x
  2. Step 2: Convert to fraction form
    28,906.70/43,360.05 = 13,354.70/x
  3. Step 3: Cross multiply
    28,906.70x = 43,360.05 × 13,354.70
  4. Step 4: Simplify right side
    28,906.70x = 579,060,459.74
  5. Step 5: Solve for x
    x = 579,060,459.74/28,906.70
  6. Step 6: Final answer
    x = 20,032.05

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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.