Home / 30,447.36-42,005.79-19,112.22

Finding the Fourth Proportional to 30,447.36, 42,005.79 and 19,112.22

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Solution

The fourth proportional to 30,447.36, 42,005.79 and 19,112.22 is: 26,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.36 : 42,005.79 = 19,112.22 : x
  2. Step 2: Convert to fraction form
    30,447.36/42,005.79 = 19,112.22/x
  3. Step 3: Cross multiply
    30,447.36x = 42,005.79 × 19,112.22
  4. Step 4: Simplify right side
    30,447.36x = 802,823,899.75
  5. Step 5: Solve for x
    x = 802,823,899.75/30,447.36
  6. Step 6: Final answer
    x = 26,367.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.