Home / 11,470.40-15,828.20-6,433.92

Finding the Fourth Proportional to 11,470.40, 15,828.20 and 6,433.92

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Solution

The fourth proportional to 11,470.40, 15,828.20 and 6,433.92 is: 8,878.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,470.40 : 15,828.20 = 6,433.92 : x
  2. Step 2: Convert to fraction form
    11,470.40/15,828.20 = 6,433.92/x
  3. Step 3: Cross multiply
    11,470.40x = 15,828.20 × 6,433.92
  4. Step 4: Simplify right side
    11,470.40x = 101,837,372.54
  5. Step 5: Solve for x
    x = 101,837,372.54/11,470.40
  6. Step 6: Final answer
    x = 8,878.28

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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.