Home / 11,405.87-15,739.95-6,370.18

Finding the Fourth Proportional to 11,405.87, 15,739.95 and 6,370.18

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Solution

The fourth proportional to 11,405.87, 15,739.95 and 6,370.18 is: 8,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.87 : 15,739.95 = 6,370.18 : x
  2. Step 2: Convert to fraction form
    11,405.87/15,739.95 = 6,370.18/x
  3. Step 3: Cross multiply
    11,405.87x = 15,739.95 × 6,370.18
  4. Step 4: Simplify right side
    11,405.87x = 100,266,275.34
  5. Step 5: Solve for x
    x = 100,266,275.34/11,405.87
  6. Step 6: Final answer
    x = 8,790.76

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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.