Home / 15,116.53-20,866.63-10,078.92

Finding the Fourth Proportional to 15,116.53, 20,866.63 and 10,078.92

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Solution

The fourth proportional to 15,116.53, 20,866.63 and 10,078.92 is: 13,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.53 : 20,866.63 = 10,078.92 : x
  2. Step 2: Convert to fraction form
    15,116.53/20,866.63 = 10,078.92/x
  3. Step 3: Cross multiply
    15,116.53x = 20,866.63 × 10,078.92
  4. Step 4: Simplify right side
    15,116.53x = 210,313,094.44
  5. Step 5: Solve for x
    x = 210,313,094.44/15,116.53
  6. Step 6: Final answer
    x = 13,912.79

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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.