Home / 26,477.58-39,716.31-20,638.50

Finding the Fourth Proportional to 26,477.58, 39,716.31 and 20,638.50

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Solution

The fourth proportional to 26,477.58, 39,716.31 and 20,638.50 is: 30,957.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,477.58 : 39,716.31 = 20,638.50 : x
  2. Step 2: Convert to fraction form
    26,477.58/39,716.31 = 20,638.50/x
  3. Step 3: Cross multiply
    26,477.58x = 39,716.31 × 20,638.50
  4. Step 4: Simplify right side
    26,477.58x = 819,685,063.94
  5. Step 5: Solve for x
    x = 819,685,063.94/26,477.58
  6. Step 6: Final answer
    x = 30,957.70

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1.5x scale

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.