Home / 10,878.83-15,007.45-7,100.25

Finding the Fourth Proportional to 10,878.83, 15,007.45 and 7,100.25

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Solution

The fourth proportional to 10,878.83, 15,007.45 and 7,100.25 is: 9,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.83 : 15,007.45 = 7,100.25 : x
  2. Step 2: Convert to fraction form
    10,878.83/15,007.45 = 7,100.25/x
  3. Step 3: Cross multiply
    10,878.83x = 15,007.45 × 7,100.25
  4. Step 4: Simplify right side
    10,878.83x = 106,556,611.36
  5. Step 5: Solve for x
    x = 106,556,611.36/10,878.83
  6. Step 6: Final answer
    x = 9,794.86

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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.