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Finding the Fourth Proportional to 18,437.81, 27,656.74 and 7,901

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Solution

The fourth proportional to 18,437.81, 27,656.74 and 7,901 is: 11,851.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.81 : 27,656.74 = 7,901 : x
  2. Step 2: Convert to fraction form
    18,437.81/27,656.74 = 7,901/x
  3. Step 3: Cross multiply
    18,437.81x = 27,656.74 × 7,901
  4. Step 4: Simplify right side
    18,437.81x = 218,515,902.74
  5. Step 5: Solve for x
    x = 218,515,902.74/18,437.81
  6. Step 6: Final answer
    x = 11,851.51

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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.