Home / 39,857.63-55,003.91-21,953.18

Finding the Fourth Proportional to 39,857.63, 55,003.91 and 21,953.18

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Solution

The fourth proportional to 39,857.63, 55,003.91 and 21,953.18 is: 30,295.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.63 : 55,003.91 = 21,953.18 : x
  2. Step 2: Convert to fraction form
    39,857.63/55,003.91 = 21,953.18/x
  3. Step 3: Cross multiply
    39,857.63x = 55,003.91 × 21,953.18
  4. Step 4: Simplify right side
    39,857.63x = 1,207,510,352.15
  5. Step 5: Solve for x
    x = 1,207,510,352.15/39,857.63
  6. Step 6: Final answer
    x = 30,295.59

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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.