Home / 39,830.40-54,965.94-21,925.32

Finding the Fourth Proportional to 39,830.40, 54,965.94 and 21,925.32

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Solution

The fourth proportional to 39,830.40, 54,965.94 and 21,925.32 is: 30,256.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,830.40 : 54,965.94 = 21,925.32 : x
  2. Step 2: Convert to fraction form
    39,830.40/54,965.94 = 21,925.32/x
  3. Step 3: Cross multiply
    39,830.40x = 54,965.94 × 21,925.32
  4. Step 4: Simplify right side
    39,830.40x = 1,205,145,439.14
  5. Step 5: Solve for x
    x = 1,205,145,439.14/39,830.40
  6. Step 6: Final answer
    x = 30,256.93

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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.