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Finding the Fourth Proportional to 15,806.84, 21,813.18 and 8,733.56

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Solution

The fourth proportional to 15,806.84, 21,813.18 and 8,733.56 is: 12,052.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.84 : 21,813.18 = 8,733.56 : x
  2. Step 2: Convert to fraction form
    15,806.84/21,813.18 = 8,733.56/x
  3. Step 3: Cross multiply
    15,806.84x = 21,813.18 × 8,733.56
  4. Step 4: Simplify right side
    15,806.84x = 190,506,716.32
  5. Step 5: Solve for x
    x = 190,506,716.32/15,806.84
  6. Step 6: Final answer
    x = 12,052.17

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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.