Home / 11,390.46-15,718.86-6,354.56

Finding the Fourth Proportional to 11,390.46, 15,718.86 and 6,354.56

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Solution

The fourth proportional to 11,390.46, 15,718.86 and 6,354.56 is: 8,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.46 : 15,718.86 = 6,354.56 : x
  2. Step 2: Convert to fraction form
    11,390.46/15,718.86 = 6,354.56/x
  3. Step 3: Cross multiply
    11,390.46x = 15,718.86 × 6,354.56
  4. Step 4: Simplify right side
    11,390.46x = 99,886,439.00
  5. Step 5: Solve for x
    x = 99,886,439.00/11,390.46
  6. Step 6: Final answer
    x = 8,769.31

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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.