Home / 13,888.40-19,166.08-8,222.88

Finding the Fourth Proportional to 13,888.40, 19,166.08 and 8,222.88

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Solution

The fourth proportional to 13,888.40, 19,166.08 and 8,222.88 is: 11,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.40 : 19,166.08 = 8,222.88 : x
  2. Step 2: Convert to fraction form
    13,888.40/19,166.08 = 8,222.88/x
  3. Step 3: Cross multiply
    13,888.40x = 19,166.08 × 8,222.88
  4. Step 4: Simplify right side
    13,888.40x = 157,600,375.91
  5. Step 5: Solve for x
    x = 157,600,375.91/13,888.40
  6. Step 6: Final answer
    x = 11,347.63

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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.