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Finding the Fourth Proportional to 12,539.97, 18,813.93 and 7,547.94

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Solution

The fourth proportional to 12,539.97, 18,813.93 and 7,547.94 is: 11,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.97 : 18,813.93 = 7,547.94 : x
  2. Step 2: Convert to fraction form
    12,539.97/18,813.93 = 7,547.94/x
  3. Step 3: Cross multiply
    12,539.97x = 18,813.93 × 7,547.94
  4. Step 4: Simplify right side
    12,539.97x = 142,006,414.80
  5. Step 5: Solve for x
    x = 142,006,414.80/12,539.97
  6. Step 6: Final answer
    x = 11,324.30

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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.