Home / 39,283.94-54,211.08-21,379.34

Finding the Fourth Proportional to 39,283.94, 54,211.08 and 21,379.34

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Solution

The fourth proportional to 39,283.94, 54,211.08 and 21,379.34 is: 29,503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283.94 : 54,211.08 = 21,379.34 : x
  2. Step 2: Convert to fraction form
    39,283.94/54,211.08 = 21,379.34/x
  3. Step 3: Cross multiply
    39,283.94x = 54,211.08 × 21,379.34
  4. Step 4: Simplify right side
    39,283.94x = 1,158,997,111.09
  5. Step 5: Solve for x
    x = 1,158,997,111.09/39,283.94
  6. Step 6: Final answer
    x = 29,503.08

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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.