Home / 11,105.84-15,326.73-6,390.02

Finding the Fourth Proportional to 11,105.84, 15,326.73 and 6,390.02

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Solution

The fourth proportional to 11,105.84, 15,326.73 and 6,390.02 is: 8,818.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.84 : 15,326.73 = 6,390.02 : x
  2. Step 2: Convert to fraction form
    11,105.84/15,326.73 = 6,390.02/x
  3. Step 3: Cross multiply
    11,105.84x = 15,326.73 × 6,390.02
  4. Step 4: Simplify right side
    11,105.84x = 97,938,111.23
  5. Step 5: Solve for x
    x = 97,938,111.23/11,105.84
  6. Step 6: Final answer
    x = 8,818.61

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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.