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Finding the Fourth Proportional to 28,709.10, 43,063.65 and 8,993.70

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Solution

The fourth proportional to 28,709.10, 43,063.65 and 8,993.70 is: 13,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.10 : 43,063.65 = 8,993.70 : x
  2. Step 2: Convert to fraction form
    28,709.10/43,063.65 = 8,993.70/x
  3. Step 3: Cross multiply
    28,709.10x = 43,063.65 × 8,993.70
  4. Step 4: Simplify right side
    28,709.10x = 387,301,549.01
  5. Step 5: Solve for x
    x = 387,301,549.01/28,709.10
  6. Step 6: Final answer
    x = 13,490.55

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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.