Home / 13,970.20-19,278.66-7,682.56

Finding the Fourth Proportional to 13,970.20, 19,278.66 and 7,682.56

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Solution

The fourth proportional to 13,970.20, 19,278.66 and 7,682.56 is: 10,601.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.20 : 19,278.66 = 7,682.56 : x
  2. Step 2: Convert to fraction form
    13,970.20/19,278.66 = 7,682.56/x
  3. Step 3: Cross multiply
    13,970.20x = 19,278.66 × 7,682.56
  4. Step 4: Simplify right side
    13,970.20x = 148,109,462.17
  5. Step 5: Solve for x
    x = 148,109,462.17/13,970.20
  6. Step 6: Final answer
    x = 10,601.81

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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.