Home / 11,433.12-15,780.36-6,718.92

Finding the Fourth Proportional to 11,433.12, 15,780.36 and 6,718.92

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Solution

The fourth proportional to 11,433.12, 15,780.36 and 6,718.92 is: 9,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,433.12 : 15,780.36 = 6,718.92 : x
  2. Step 2: Convert to fraction form
    11,433.12/15,780.36 = 6,718.92/x
  3. Step 3: Cross multiply
    11,433.12x = 15,780.36 × 6,718.92
  4. Step 4: Simplify right side
    11,433.12x = 106,026,976.41
  5. Step 5: Solve for x
    x = 106,026,976.41/11,433.12
  6. Step 6: Final answer
    x = 9,273.67

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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.