Home / 15,168.40-20,932.43-8,455.37

Finding the Fourth Proportional to 15,168.40, 20,932.43 and 8,455.37

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Solution

The fourth proportional to 15,168.40, 20,932.43 and 8,455.37 is: 11,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.40 : 20,932.43 = 8,455.37 : x
  2. Step 2: Convert to fraction form
    15,168.40/20,932.43 = 8,455.37/x
  3. Step 3: Cross multiply
    15,168.40x = 20,932.43 × 8,455.37
  4. Step 4: Simplify right side
    15,168.40x = 176,991,411.46
  5. Step 5: Solve for x
    x = 176,991,411.46/15,168.40
  6. Step 6: Final answer
    x = 11,668.43

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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.