Home / 11,156.63-15,392.31-7,803.23

Finding the Fourth Proportional to 11,156.63, 15,392.31 and 7,803.23

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Solution

The fourth proportional to 11,156.63, 15,392.31 and 7,803.23 is: 10,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.63 : 15,392.31 = 7,803.23 : x
  2. Step 2: Convert to fraction form
    11,156.63/15,392.31 = 7,803.23/x
  3. Step 3: Cross multiply
    11,156.63x = 15,392.31 × 7,803.23
  4. Step 4: Simplify right side
    11,156.63x = 120,109,735.16
  5. Step 5: Solve for x
    x = 120,109,735.16/11,156.63
  6. Step 6: Final answer
    x = 10,765.77

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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.