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Finding the Fourth Proportional to 28,706.00, 39,616.70 and 15,960.11

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Solution

The fourth proportional to 28,706.00, 39,616.70 and 15,960.11 is: 22,026.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.00 : 39,616.70 = 15,960.11 : x
  2. Step 2: Convert to fraction form
    28,706.00/39,616.70 = 15,960.11/x
  3. Step 3: Cross multiply
    28,706.00x = 39,616.70 × 15,960.11
  4. Step 4: Simplify right side
    28,706.00x = 632,286,611.95
  5. Step 5: Solve for x
    x = 632,286,611.95/28,706.00
  6. Step 6: Final answer
    x = 22,026.29

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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.