Home / 39,701.40-59,465.70-21,211.80

Finding the Fourth Proportional to 39,701.40, 59,465.70 and 21,211.80

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Solution

The fourth proportional to 39,701.40, 59,465.70 and 21,211.80 is: 31,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,701.40 : 59,465.70 = 21,211.80 : x
  2. Step 2: Convert to fraction form
    39,701.40/59,465.70 = 21,211.80/x
  3. Step 3: Cross multiply
    39,701.40x = 59,465.70 × 21,211.80
  4. Step 4: Simplify right side
    39,701.40x = 1,261,374,535.26
  5. Step 5: Solve for x
    x = 1,261,374,535.26/39,701.40
  6. Step 6: Final answer
    x = 31,771.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.