Home / 13,228.40-19,835.84-6,991.76

Finding the Fourth Proportional to 13,228.40, 19,835.84 and 6,991.76

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Solution

The fourth proportional to 13,228.40, 19,835.84 and 6,991.76 is: 10,484.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.40 : 19,835.84 = 6,991.76 : x
  2. Step 2: Convert to fraction form
    13,228.40/19,835.84 = 6,991.76/x
  3. Step 3: Cross multiply
    13,228.40x = 19,835.84 × 6,991.76
  4. Step 4: Simplify right side
    13,228.40x = 138,687,432.68
  5. Step 5: Solve for x
    x = 138,687,432.68/13,228.40
  6. Step 6: Final answer
    x = 10,484.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.