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Finding the Fourth Proportional to 18,307.84, 27,461.60 and 6,620.96

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Solution

The fourth proportional to 18,307.84, 27,461.60 and 6,620.96 is: 9,931.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.84 : 27,461.60 = 6,620.96 : x
  2. Step 2: Convert to fraction form
    18,307.84/27,461.60 = 6,620.96/x
  3. Step 3: Cross multiply
    18,307.84x = 27,461.60 × 6,620.96
  4. Step 4: Simplify right side
    18,307.84x = 181,822,155.14
  5. Step 5: Solve for x
    x = 181,822,155.14/18,307.84
  6. Step 6: Final answer
    x = 9,931.38

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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.