Home / 11,391.28-15,718.76-6,674.68

Finding the Fourth Proportional to 11,391.28, 15,718.76 and 6,674.68

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Solution

The fourth proportional to 11,391.28, 15,718.76 and 6,674.68 is: 9,210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.28 : 15,718.76 = 6,674.68 : x
  2. Step 2: Convert to fraction form
    11,391.28/15,718.76 = 6,674.68/x
  3. Step 3: Cross multiply
    11,391.28x = 15,718.76 × 6,674.68
  4. Step 4: Simplify right side
    11,391.28x = 104,917,693.00
  5. Step 5: Solve for x
    x = 104,917,693.00/11,391.28
  6. Step 6: Final answer
    x = 9,210.35

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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.