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Finding the Fourth Proportional to 12,963.63, 19,444.53 and 7,399.53

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Solution

The fourth proportional to 12,963.63, 19,444.53 and 7,399.53 is: 11,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.63 : 19,444.53 = 7,399.53 : x
  2. Step 2: Convert to fraction form
    12,963.63/19,444.53 = 7,399.53/x
  3. Step 3: Cross multiply
    12,963.63x = 19,444.53 × 7,399.53
  4. Step 4: Simplify right side
    12,963.63x = 143,880,383.07
  5. Step 5: Solve for x
    x = 143,880,383.07/12,963.63
  6. Step 6: Final answer
    x = 11,098.77

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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.