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Finding the Fourth Proportional to 28,994.40, 43,475.40 and 13,392.72

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Solution

The fourth proportional to 28,994.40, 43,475.40 and 13,392.72 is: 20,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,994.40 : 43,475.40 = 13,392.72 : x
  2. Step 2: Convert to fraction form
    28,994.40/43,475.40 = 13,392.72/x
  3. Step 3: Cross multiply
    28,994.40x = 43,475.40 × 13,392.72
  4. Step 4: Simplify right side
    28,994.40x = 582,253,859.09
  5. Step 5: Solve for x
    x = 582,253,859.09/28,994.40
  6. Step 6: Final answer
    x = 20,081.60

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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.