Home / 14,427.89-19,911.09-8,140.25

Finding the Fourth Proportional to 14,427.89, 19,911.09 and 8,140.25

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Solution

The fourth proportional to 14,427.89, 19,911.09 and 8,140.25 is: 11,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,427.89 : 19,911.09 = 8,140.25 : x
  2. Step 2: Convert to fraction form
    14,427.89/19,911.09 = 8,140.25/x
  3. Step 3: Cross multiply
    14,427.89x = 19,911.09 × 8,140.25
  4. Step 4: Simplify right side
    14,427.89x = 162,081,250.37
  5. Step 5: Solve for x
    x = 162,081,250.37/14,427.89
  6. Step 6: Final answer
    x = 11,233.88

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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.