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Finding the Fourth Proportional to 15,773.73, 21,767.70 and 8,603.64

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Solution

The fourth proportional to 15,773.73, 21,767.70 and 8,603.64 is: 11,873.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773.73 : 21,767.70 = 8,603.64 : x
  2. Step 2: Convert to fraction form
    15,773.73/21,767.70 = 8,603.64/x
  3. Step 3: Cross multiply
    15,773.73x = 21,767.70 × 8,603.64
  4. Step 4: Simplify right side
    15,773.73x = 187,281,454.43
  5. Step 5: Solve for x
    x = 187,281,454.43/15,773.73
  6. Step 6: Final answer
    x = 11,873.00

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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.