Home / 15,847.36-21,869.58-8,773.78

Finding the Fourth Proportional to 15,847.36, 21,869.58 and 8,773.78

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Solution

The fourth proportional to 15,847.36, 21,869.58 and 8,773.78 is: 12,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.36 : 21,869.58 = 8,773.78 : x
  2. Step 2: Convert to fraction form
    15,847.36/21,869.58 = 8,773.78/x
  3. Step 3: Cross multiply
    15,847.36x = 21,869.58 × 8,773.78
  4. Step 4: Simplify right side
    15,847.36x = 191,878,883.61
  5. Step 5: Solve for x
    x = 191,878,883.61/15,847.36
  6. Step 6: Final answer
    x = 12,107.94

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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.