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Finding the Fourth Proportional to 18,138.63, 25,030.01 and 10,182.03

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Solution

The fourth proportional to 18,138.63, 25,030.01 and 10,182.03 is: 14,050.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.63 : 25,030.01 = 10,182.03 : x
  2. Step 2: Convert to fraction form
    18,138.63/25,030.01 = 10,182.03/x
  3. Step 3: Cross multiply
    18,138.63x = 25,030.01 × 10,182.03
  4. Step 4: Simplify right side
    18,138.63x = 254,856,261.81
  5. Step 5: Solve for x
    x = 254,856,261.81/18,138.63
  6. Step 6: Final answer
    x = 14,050.47

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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.