Home / 28,928.96-43,392.64-9,208.72

Finding the Fourth Proportional to 28,928.96, 43,392.64 and 9,208.72

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Solution

The fourth proportional to 28,928.96, 43,392.64 and 9,208.72 is: 13,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,928.96 : 43,392.64 = 9,208.72 : x
  2. Step 2: Convert to fraction form
    28,928.96/43,392.64 = 9,208.72/x
  3. Step 3: Cross multiply
    28,928.96x = 43,392.64 × 9,208.72
  4. Step 4: Simplify right side
    28,928.96x = 399,590,671.82
  5. Step 5: Solve for x
    x = 399,590,671.82/28,928.96
  6. Step 6: Final answer
    x = 13,812.83

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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.