Home / 11,403.15-15,730.52-6,686.61

Finding the Fourth Proportional to 11,403.15, 15,730.52 and 6,686.61

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Solution

The fourth proportional to 11,403.15, 15,730.52 and 6,686.61 is: 9,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.15 : 15,730.52 = 6,686.61 : x
  2. Step 2: Convert to fraction form
    11,403.15/15,730.52 = 6,686.61/x
  3. Step 3: Cross multiply
    11,403.15x = 15,730.52 × 6,686.61
  4. Step 4: Simplify right side
    11,403.15x = 105,183,818.90
  5. Step 5: Solve for x
    x = 105,183,818.90/11,403.15
  6. Step 6: Final answer
    x = 9,224.10

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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.