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Finding the Fourth Proportional to 38,790.84, 58,186.26 and 18,003

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Solution

The fourth proportional to 38,790.84, 58,186.26 and 18,003 is: 27,004.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,790.84 : 58,186.26 = 18,003 : x
  2. Step 2: Convert to fraction form
    38,790.84/58,186.26 = 18,003/x
  3. Step 3: Cross multiply
    38,790.84x = 58,186.26 × 18,003
  4. Step 4: Simplify right side
    38,790.84x = 1,047,527,238.78
  5. Step 5: Solve for x
    x = 1,047,527,238.78/38,790.84
  6. Step 6: Final answer
    x = 27,004.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.