Home / 11,869.84-16,380.48-7,153.12

Finding the Fourth Proportional to 11,869.84, 16,380.48 and 7,153.12

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Solution

The fourth proportional to 11,869.84, 16,380.48 and 7,153.12 is: 9,871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.84 : 16,380.48 = 7,153.12 : x
  2. Step 2: Convert to fraction form
    11,869.84/16,380.48 = 7,153.12/x
  3. Step 3: Cross multiply
    11,869.84x = 16,380.48 × 7,153.12
  4. Step 4: Simplify right side
    11,869.84x = 117,171,539.10
  5. Step 5: Solve for x
    x = 117,171,539.10/11,869.84
  6. Step 6: Final answer
    x = 9,871.37

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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.