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Finding the Fourth Proportional to 18,303.36, 27,461.76 and 7,775.68

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Solution

The fourth proportional to 18,303.36, 27,461.76 and 7,775.68 is: 11,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.36 : 27,461.76 = 7,775.68 : x
  2. Step 2: Convert to fraction form
    18,303.36/27,461.76 = 7,775.68/x
  3. Step 3: Cross multiply
    18,303.36x = 27,461.76 × 7,775.68
  4. Step 4: Simplify right side
    18,303.36x = 213,533,858.00
  5. Step 5: Solve for x
    x = 213,533,858.00/18,303.36
  6. Step 6: Final answer
    x = 11,666.37

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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.