Home / 13,890.83-19,166.29-8,222.76

Finding the Fourth Proportional to 13,890.83, 19,166.29 and 8,222.76

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Solution

The fourth proportional to 13,890.83, 19,166.29 and 8,222.76 is: 11,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.83 : 19,166.29 = 8,222.76 : x
  2. Step 2: Convert to fraction form
    13,890.83/19,166.29 = 8,222.76/x
  3. Step 3: Cross multiply
    13,890.83x = 19,166.29 × 8,222.76
  4. Step 4: Simplify right side
    13,890.83x = 157,599,782.20
  5. Step 5: Solve for x
    x = 157,599,782.20/13,890.83
  6. Step 6: Final answer
    x = 11,345.60

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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.