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Finding the Fourth Proportional to 13,172.54, 19,642.62 and 13,054.01

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Solution

The fourth proportional to 13,172.54, 19,642.62 and 13,054.01 is: 19,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.54 : 19,642.62 = 13,054.01 : x
  2. Step 2: Convert to fraction form
    13,172.54/19,642.62 = 13,054.01/x
  3. Step 3: Cross multiply
    13,172.54x = 19,642.62 × 13,054.01
  4. Step 4: Simplify right side
    13,172.54x = 256,414,957.91
  5. Step 5: Solve for x
    x = 256,414,957.91/13,172.54
  6. Step 6: Final answer
    x = 19,465.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.