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Finding the Fourth Proportional to 12,560.49, 18,840.74 and 7,363.53

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Solution

The fourth proportional to 12,560.49, 18,840.74 and 7,363.53 is: 11,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.49 : 18,840.74 = 7,363.53 : x
  2. Step 2: Convert to fraction form
    12,560.49/18,840.74 = 7,363.53/x
  3. Step 3: Cross multiply
    12,560.49x = 18,840.74 × 7,363.53
  4. Step 4: Simplify right side
    12,560.49x = 138,734,317.39
  5. Step 5: Solve for x
    x = 138,734,317.39/12,560.49
  6. Step 6: Final answer
    x = 11,045.30

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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.