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Finding the Fourth Proportional to 18,684.61, 28,036.65 and 7,599.49

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Solution

The fourth proportional to 18,684.61, 28,036.65 and 7,599.49 is: 11,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.61 : 28,036.65 = 7,599.49 : x
  2. Step 2: Convert to fraction form
    18,684.61/28,036.65 = 7,599.49/x
  3. Step 3: Cross multiply
    18,684.61x = 28,036.65 × 7,599.49
  4. Step 4: Simplify right side
    18,684.61x = 213,064,241.31
  5. Step 5: Solve for x
    x = 213,064,241.31/18,684.61
  6. Step 6: Final answer
    x = 11,403.19

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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.