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Finding the Fourth Proportional to 28,865.70, 43,266.15 and 14,820.30

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Solution

The fourth proportional to 28,865.70, 43,266.15 and 14,820.30 is: 22,213.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.70 : 43,266.15 = 14,820.30 : x
  2. Step 2: Convert to fraction form
    28,865.70/43,266.15 = 14,820.30/x
  3. Step 3: Cross multiply
    28,865.70x = 43,266.15 × 14,820.30
  4. Step 4: Simplify right side
    28,865.70x = 641,217,322.85
  5. Step 5: Solve for x
    x = 641,217,322.85/28,865.70
  6. Step 6: Final answer
    x = 22,213.82

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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.