Home / 39,874.32-55,026.59-21,969.18

Finding the Fourth Proportional to 39,874.32, 55,026.59 and 21,969.18

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Solution

The fourth proportional to 39,874.32, 55,026.59 and 21,969.18 is: 30,317.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.32 : 55,026.59 = 21,969.18 : x
  2. Step 2: Convert to fraction form
    39,874.32/55,026.59 = 21,969.18/x
  3. Step 3: Cross multiply
    39,874.32x = 55,026.59 × 21,969.18
  4. Step 4: Simplify right side
    39,874.32x = 1,208,888,950.65
  5. Step 5: Solve for x
    x = 1,208,888,950.65/39,874.32
  6. Step 6: Final answer
    x = 30,317.48

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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.