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Finding the Fourth Proportional to 13,989.52, 19,125.36 and 13,989.52

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Solution

The fourth proportional to 13,989.52, 19,125.36 and 13,989.52 is: 19,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.52 : 19,125.36 = 13,989.52 : x
  2. Step 2: Convert to fraction form
    13,989.52/19,125.36 = 13,989.52/x
  3. Step 3: Cross multiply
    13,989.52x = 19,125.36 × 13,989.52
  4. Step 4: Simplify right side
    13,989.52x = 267,554,606.23
  5. Step 5: Solve for x
    x = 267,554,606.23/13,989.52
  6. Step 6: Final answer
    x = 19,125.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.