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Finding the Fourth Proportional to 11,963.94, 16,510.88 and 6,658.87

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Solution

The fourth proportional to 11,963.94, 16,510.88 and 6,658.87 is: 9,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,963.94 : 16,510.88 = 6,658.87 : x
  2. Step 2: Convert to fraction form
    11,963.94/16,510.88 = 6,658.87/x
  3. Step 3: Cross multiply
    11,963.94x = 16,510.88 × 6,658.87
  4. Step 4: Simplify right side
    11,963.94x = 109,943,803.51
  5. Step 5: Solve for x
    x = 109,943,803.51/11,963.94
  6. Step 6: Final answer
    x = 9,189.60

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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.