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Finding the Fourth Proportional to 21,751.14, 30,031.02 and 16,706.34

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Solution

The fourth proportional to 21,751.14, 30,031.02 and 16,706.34 is: 23,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.14 : 30,031.02 = 16,706.34 : x
  2. Step 2: Convert to fraction form
    21,751.14/30,031.02 = 16,706.34/x
  3. Step 3: Cross multiply
    21,751.14x = 30,031.02 × 16,706.34
  4. Step 4: Simplify right side
    21,751.14x = 501,708,430.67
  5. Step 5: Solve for x
    x = 501,708,430.67/21,751.14
  6. Step 6: Final answer
    x = 23,065.85

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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.