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Finding the Fourth Proportional to 15,479.98, 23,219.94 and 5,619.24

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Solution

The fourth proportional to 15,479.98, 23,219.94 and 5,619.24 is: 8,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,479.98 : 23,219.94 = 5,619.24 : x
  2. Step 2: Convert to fraction form
    15,479.98/23,219.94 = 5,619.24/x
  3. Step 3: Cross multiply
    15,479.98x = 23,219.94 × 5,619.24
  4. Step 4: Simplify right side
    15,479.98x = 130,478,415.65
  5. Step 5: Solve for x
    x = 130,478,415.65/15,479.98
  6. Step 6: Final answer
    x = 8,428.85

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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.