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Finding the Fourth Proportional to 18,485, 25,509.46 and 10,101.50

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Solution

The fourth proportional to 18,485, 25,509.46 and 10,101.50 is: 13,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485 : 25,509.46 = 10,101.50 : x
  2. Step 2: Convert to fraction form
    18,485/25,509.46 = 10,101.50/x
  3. Step 3: Cross multiply
    18,485x = 25,509.46 × 10,101.50
  4. Step 4: Simplify right side
    18,485x = 257,683,810.19
  5. Step 5: Solve for x
    x = 257,683,810.19/18,485
  6. Step 6: Final answer
    x = 13,940.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.