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Finding the Fourth Proportional to 19,718.84, 27,211.84 and 10,766.34

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Solution

The fourth proportional to 19,718.84, 27,211.84 and 10,766.34 is: 14,857.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.84 : 27,211.84 = 10,766.34 : x
  2. Step 2: Convert to fraction form
    19,718.84/27,211.84 = 10,766.34/x
  3. Step 3: Cross multiply
    19,718.84x = 27,211.84 × 10,766.34
  4. Step 4: Simplify right side
    19,718.84x = 292,971,921.47
  5. Step 5: Solve for x
    x = 292,971,921.47/19,718.84
  6. Step 6: Final answer
    x = 14,857.46

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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.