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Finding the Fourth Proportional to 15,122.88, 22,690.08 and 5,263.20

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Solution

The fourth proportional to 15,122.88, 22,690.08 and 5,263.20 is: 7,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.88 : 22,690.08 = 5,263.20 : x
  2. Step 2: Convert to fraction form
    15,122.88/22,690.08 = 5,263.20/x
  3. Step 3: Cross multiply
    15,122.88x = 22,690.08 × 5,263.20
  4. Step 4: Simplify right side
    15,122.88x = 119,422,429.06
  5. Step 5: Solve for x
    x = 119,422,429.06/15,122.88
  6. Step 6: Final answer
    x = 7,896.80

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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.