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Finding the Fourth Proportional to 15,172.56, 22,762.98 and 8,603.42

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Solution

The fourth proportional to 15,172.56, 22,762.98 and 8,603.42 is: 12,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.56 : 22,762.98 = 8,603.42 : x
  2. Step 2: Convert to fraction form
    15,172.56/22,762.98 = 8,603.42/x
  3. Step 3: Cross multiply
    15,172.56x = 22,762.98 × 8,603.42
  4. Step 4: Simplify right side
    15,172.56x = 195,839,363.58
  5. Step 5: Solve for x
    x = 195,839,363.58/15,172.56
  6. Step 6: Final answer
    x = 12,907.47

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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.