Home / 19,271.08-28,908.84-7,422.09

Finding the Fourth Proportional to 19,271.08, 28,908.84 and 7,422.09

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Solution

The fourth proportional to 19,271.08, 28,908.84 and 7,422.09 is: 11,133.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.08 : 28,908.84 = 7,422.09 : x
  2. Step 2: Convert to fraction form
    19,271.08/28,908.84 = 7,422.09/x
  3. Step 3: Cross multiply
    19,271.08x = 28,908.84 × 7,422.09
  4. Step 4: Simplify right side
    19,271.08x = 214,563,975.17
  5. Step 5: Solve for x
    x = 214,563,975.17/19,271.08
  6. Step 6: Final answer
    x = 11,133.99

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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.