Home / 10,920.96-15,068.59-6,940.62

Finding the Fourth Proportional to 10,920.96, 15,068.59 and 6,940.62

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Solution

The fourth proportional to 10,920.96, 15,068.59 and 6,940.62 is: 9,576.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.96 : 15,068.59 = 6,940.62 : x
  2. Step 2: Convert to fraction form
    10,920.96/15,068.59 = 6,940.62/x
  3. Step 3: Cross multiply
    10,920.96x = 15,068.59 × 6,940.62
  4. Step 4: Simplify right side
    10,920.96x = 104,585,339.77
  5. Step 5: Solve for x
    x = 104,585,339.77/10,920.96
  6. Step 6: Final answer
    x = 9,576.57

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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.