Home / 12,858.03-19,271.63-6,620.99

Finding the Fourth Proportional to 12,858.03, 19,271.63 and 6,620.99

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Solution

The fourth proportional to 12,858.03, 19,271.63 and 6,620.99 is: 9,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.03 : 19,271.63 = 6,620.99 : x
  2. Step 2: Convert to fraction form
    12,858.03/19,271.63 = 6,620.99/x
  3. Step 3: Cross multiply
    12,858.03x = 19,271.63 × 6,620.99
  4. Step 4: Simplify right side
    12,858.03x = 127,597,189.71
  5. Step 5: Solve for x
    x = 127,597,189.71/12,858.03
  6. Step 6: Final answer
    x = 9,923.54

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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.