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Finding the Fourth Proportional to 15,083.73, 20,813.43 and 8,368.95

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Solution

The fourth proportional to 15,083.73, 20,813.43 and 8,368.95 is: 11,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.73 : 20,813.43 = 8,368.95 : x
  2. Step 2: Convert to fraction form
    15,083.73/20,813.43 = 8,368.95/x
  3. Step 3: Cross multiply
    15,083.73x = 20,813.43 × 8,368.95
  4. Step 4: Simplify right side
    15,083.73x = 174,186,555.00
  5. Step 5: Solve for x
    x = 174,186,555.00/15,083.73
  6. Step 6: Final answer
    x = 11,547.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.