Home / 39,020.94-53,848.71-21,115.98

Finding the Fourth Proportional to 39,020.94, 53,848.71 and 21,115.98

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Solution

The fourth proportional to 39,020.94, 53,848.71 and 21,115.98 is: 29,139.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,020.94 : 53,848.71 = 21,115.98 : x
  2. Step 2: Convert to fraction form
    39,020.94/53,848.71 = 21,115.98/x
  3. Step 3: Cross multiply
    39,020.94x = 53,848.71 × 21,115.98
  4. Step 4: Simplify right side
    39,020.94x = 1,137,068,283.39
  5. Step 5: Solve for x
    x = 1,137,068,283.39/39,020.94
  6. Step 6: Final answer
    x = 29,139.95

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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.