Home / 39,205.70-54,102.93-21,300.30

Finding the Fourth Proportional to 39,205.70, 54,102.93 and 21,300.30

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Solution

The fourth proportional to 39,205.70, 54,102.93 and 21,300.30 is: 29,393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,205.70 : 54,102.93 = 21,300.30 : x
  2. Step 2: Convert to fraction form
    39,205.70/54,102.93 = 21,300.30/x
  3. Step 3: Cross multiply
    39,205.70x = 54,102.93 × 21,300.30
  4. Step 4: Simplify right side
    39,205.70x = 1,152,408,639.88
  5. Step 5: Solve for x
    x = 1,152,408,639.88/39,205.70
  6. Step 6: Final answer
    x = 29,393.91

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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.