Home / 30,368.51-41,959.94-21,853.79

Finding the Fourth Proportional to 30,368.51, 41,959.94 and 21,853.79

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Solution

The fourth proportional to 30,368.51, 41,959.94 and 21,853.79 is: 30,195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.51 : 41,959.94 = 21,853.79 : x
  2. Step 2: Convert to fraction form
    30,368.51/41,959.94 = 21,853.79/x
  3. Step 3: Cross multiply
    30,368.51x = 41,959.94 × 21,853.79
  4. Step 4: Simplify right side
    30,368.51x = 916,983,717.17
  5. Step 5: Solve for x
    x = 916,983,717.17/30,368.51
  6. Step 6: Final answer
    x = 30,195.22

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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.