Home / 11,869.84-16,402.26-11,485.36

Finding the Fourth Proportional to 11,869.84, 16,402.26 and 11,485.36

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Solution

The fourth proportional to 11,869.84, 16,402.26 and 11,485.36 is: 15,870.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.84 : 16,402.26 = 11,485.36 : x
  2. Step 2: Convert to fraction form
    11,869.84/16,402.26 = 11,485.36/x
  3. Step 3: Cross multiply
    11,869.84x = 16,402.26 × 11,485.36
  4. Step 4: Simplify right side
    11,869.84x = 188,385,860.91
  5. Step 5: Solve for x
    x = 188,385,860.91/11,869.84
  6. Step 6: Final answer
    x = 15,870.97

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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.