Home / 11,185.39-15,435.50-6,405.17

Finding the Fourth Proportional to 11,185.39, 15,435.50 and 6,405.17

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Solution

The fourth proportional to 11,185.39, 15,435.50 and 6,405.17 is: 8,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.39 : 15,435.50 = 6,405.17 : x
  2. Step 2: Convert to fraction form
    11,185.39/15,435.50 = 6,405.17/x
  3. Step 3: Cross multiply
    11,185.39x = 15,435.50 × 6,405.17
  4. Step 4: Simplify right side
    11,185.39x = 98,866,979.16
  5. Step 5: Solve for x
    x = 98,866,979.16/11,185.39
  6. Step 6: Final answer
    x = 8,838.94

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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.