Home / 28,746.28-43,112.94-7,971.40

Finding the Fourth Proportional to 28,746.28, 43,112.94 and 7,971.40

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Solution

The fourth proportional to 28,746.28, 43,112.94 and 7,971.40 is: 11,955.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.28 : 43,112.94 = 7,971.40 : x
  2. Step 2: Convert to fraction form
    28,746.28/43,112.94 = 7,971.40/x
  3. Step 3: Cross multiply
    28,746.28x = 43,112.94 × 7,971.40
  4. Step 4: Simplify right side
    28,746.28x = 343,670,489.92
  5. Step 5: Solve for x
    x = 343,670,489.92/28,746.28
  6. Step 6: Final answer
    x = 11,955.30

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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.