Home / 28,697.16-43,046.70-7,920.84

Finding the Fourth Proportional to 28,697.16, 43,046.70 and 7,920.84

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Solution

The fourth proportional to 28,697.16, 43,046.70 and 7,920.84 is: 11,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.16 : 43,046.70 = 7,920.84 : x
  2. Step 2: Convert to fraction form
    28,697.16/43,046.70 = 7,920.84/x
  3. Step 3: Cross multiply
    28,697.16x = 43,046.70 × 7,920.84
  4. Step 4: Simplify right side
    28,697.16x = 340,966,023.23
  5. Step 5: Solve for x
    x = 340,966,023.23/28,697.16
  6. Step 6: Final answer
    x = 11,881.52

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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.