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Finding the Fourth Proportional to 18,810.14, 25,945.58 and 12,085.16

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Solution

The fourth proportional to 18,810.14, 25,945.58 and 12,085.16 is: 16,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.14 : 25,945.58 = 12,085.16 : x
  2. Step 2: Convert to fraction form
    18,810.14/25,945.58 = 12,085.16/x
  3. Step 3: Cross multiply
    18,810.14x = 25,945.58 × 12,085.16
  4. Step 4: Simplify right side
    18,810.14x = 313,556,485.59
  5. Step 5: Solve for x
    x = 313,556,485.59/18,810.14
  6. Step 6: Final answer
    x = 16,669.55

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1.5x scale

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.