Home / 13,972.24-19,290.54-8,672.68

Finding the Fourth Proportional to 13,972.24, 19,290.54 and 8,672.68

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Solution

The fourth proportional to 13,972.24, 19,290.54 and 8,672.68 is: 11,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.24 : 19,290.54 = 8,672.68 : x
  2. Step 2: Convert to fraction form
    13,972.24/19,290.54 = 8,672.68/x
  3. Step 3: Cross multiply
    13,972.24x = 19,290.54 × 8,672.68
  4. Step 4: Simplify right side
    13,972.24x = 167,300,680.45
  5. Step 5: Solve for x
    x = 167,300,680.45/13,972.24
  6. Step 6: Final answer
    x = 11,973.79

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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.