Home / 11,423.60-15,763.56-6,455.60

Finding the Fourth Proportional to 11,423.60, 15,763.56 and 6,455.60

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Solution

The fourth proportional to 11,423.60, 15,763.56 and 6,455.60 is: 8,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.60 : 15,763.56 = 6,455.60 : x
  2. Step 2: Convert to fraction form
    11,423.60/15,763.56 = 6,455.60/x
  3. Step 3: Cross multiply
    11,423.60x = 15,763.56 × 6,455.60
  4. Step 4: Simplify right side
    11,423.60x = 101,763,237.94
  5. Step 5: Solve for x
    x = 101,763,237.94/11,423.60
  6. Step 6: Final answer
    x = 8,908.16

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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.