Home / 42,984.12-64,477.32-11,819.16

Finding the Fourth Proportional to 42,984.12, 64,477.32 and 11,819.16

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Solution

The fourth proportional to 42,984.12, 64,477.32 and 11,819.16 is: 17,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,984.12 : 64,477.32 = 11,819.16 : x
  2. Step 2: Convert to fraction form
    42,984.12/64,477.32 = 11,819.16/x
  3. Step 3: Cross multiply
    42,984.12x = 64,477.32 × 11,819.16
  4. Step 4: Simplify right side
    42,984.12x = 762,067,761.45
  5. Step 5: Solve for x
    x = 762,067,761.45/42,984.12
  6. Step 6: Final answer
    x = 17,729.05

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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.