Home / 42,858.64-64,287.60-11,693.92

Finding the Fourth Proportional to 42,858.64, 64,287.60 and 11,693.92

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Solution

The fourth proportional to 42,858.64, 64,287.60 and 11,693.92 is: 17,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,858.64 : 64,287.60 = 11,693.92 : x
  2. Step 2: Convert to fraction form
    42,858.64/64,287.60 = 11,693.92/x
  3. Step 3: Cross multiply
    42,858.64x = 64,287.60 × 11,693.92
  4. Step 4: Simplify right side
    42,858.64x = 751,774,051.39
  5. Step 5: Solve for x
    x = 751,774,051.39/42,858.64
  6. Step 6: Final answer
    x = 17,540.78

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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.