Home / 20,866.48-31,299.78-6,075.76

Finding the Fourth Proportional to 20,866.48, 31,299.78 and 6,075.76

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Solution

The fourth proportional to 20,866.48, 31,299.78 and 6,075.76 is: 9,113.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.48 : 31,299.78 = 6,075.76 : x
  2. Step 2: Convert to fraction form
    20,866.48/31,299.78 = 6,075.76/x
  3. Step 3: Cross multiply
    20,866.48x = 31,299.78 × 6,075.76
  4. Step 4: Simplify right side
    20,866.48x = 190,169,951.33
  5. Step 5: Solve for x
    x = 190,169,951.33/20,866.48
  6. Step 6: Final answer
    x = 9,113.66

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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.