Home / 13,290.33-18,347.31-10,299.45

Finding the Fourth Proportional to 13,290.33, 18,347.31 and 10,299.45

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Solution

The fourth proportional to 13,290.33, 18,347.31 and 10,299.45 is: 14,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.33 : 18,347.31 = 10,299.45 : x
  2. Step 2: Convert to fraction form
    13,290.33/18,347.31 = 10,299.45/x
  3. Step 3: Cross multiply
    13,290.33x = 18,347.31 × 10,299.45
  4. Step 4: Simplify right side
    13,290.33x = 188,967,201.98
  5. Step 5: Solve for x
    x = 188,967,201.98/13,290.33
  6. Step 6: Final answer
    x = 14,218.40

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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.