Home / 15,856.86-21,871.91-10,198.76

Finding the Fourth Proportional to 15,856.86, 21,871.91 and 10,198.76

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Solution

The fourth proportional to 15,856.86, 21,871.91 and 10,198.76 is: 14,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.86 : 21,871.91 = 10,198.76 : x
  2. Step 2: Convert to fraction form
    15,856.86/21,871.91 = 10,198.76/x
  3. Step 3: Cross multiply
    15,856.86x = 21,871.91 × 10,198.76
  4. Step 4: Simplify right side
    15,856.86x = 223,066,360.83
  5. Step 5: Solve for x
    x = 223,066,360.83/15,856.86
  6. Step 6: Final answer
    x = 14,067.50

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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.