Home / 20,750.63-31,138.70-10,896.98

Finding the Fourth Proportional to 20,750.63, 31,138.70 and 10,896.98

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Solution

The fourth proportional to 20,750.63, 31,138.70 and 10,896.98 is: 16,352.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.63 : 31,138.70 = 10,896.98 : x
  2. Step 2: Convert to fraction form
    20,750.63/31,138.70 = 10,896.98/x
  3. Step 3: Cross multiply
    20,750.63x = 31,138.70 × 10,896.98
  4. Step 4: Simplify right side
    20,750.63x = 339,317,580.95
  5. Step 5: Solve for x
    x = 339,317,580.95/20,750.63
  6. Step 6: Final answer
    x = 16,352.16

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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.