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Finding the Fourth Proportional to 19,772.66, 27,285.72 and 11,706.72

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Solution

The fourth proportional to 19,772.66, 27,285.72 and 11,706.72 is: 16,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.66 : 27,285.72 = 11,706.72 : x
  2. Step 2: Convert to fraction form
    19,772.66/27,285.72 = 11,706.72/x
  3. Step 3: Cross multiply
    19,772.66x = 27,285.72 × 11,706.72
  4. Step 4: Simplify right side
    19,772.66x = 319,426,284.04
  5. Step 5: Solve for x
    x = 319,426,284.04/19,772.66
  6. Step 6: Final answer
    x = 16,154.95

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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.