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Finding the Fourth Proportional to 11,423.88, 15,765.56 and 6,946.90

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Solution

The fourth proportional to 11,423.88, 15,765.56 and 6,946.90 is: 9,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.88 : 15,765.56 = 6,946.90 : x
  2. Step 2: Convert to fraction form
    11,423.88/15,765.56 = 6,946.90/x
  3. Step 3: Cross multiply
    11,423.88x = 15,765.56 × 6,946.90
  4. Step 4: Simplify right side
    11,423.88x = 109,521,768.76
  5. Step 5: Solve for x
    x = 109,521,768.76/11,423.88
  6. Step 6: Final answer
    x = 9,587.09

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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.