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Finding the Fourth Proportional to 18,036.70, 27,030.48 and 10,142.98

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Solution

The fourth proportional to 18,036.70, 27,030.48 and 10,142.98 is: 15,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,036.70 : 27,030.48 = 10,142.98 : x
  2. Step 2: Convert to fraction form
    18,036.70/27,030.48 = 10,142.98/x
  3. Step 3: Cross multiply
    18,036.70x = 27,030.48 × 10,142.98
  4. Step 4: Simplify right side
    18,036.70x = 274,169,512.42
  5. Step 5: Solve for x
    x = 274,169,512.42/18,036.70
  6. Step 6: Final answer
    x = 15,200.65

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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.