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Finding the Fourth Proportional to 16,207.70, 21,570.07 and 16,207.70

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Solution

The fourth proportional to 16,207.70, 21,570.07 and 16,207.70 is: 21,570.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,207.70 : 21,570.07 = 16,207.70 : x
  2. Step 2: Convert to fraction form
    16,207.70/21,570.07 = 16,207.70/x
  3. Step 3: Cross multiply
    16,207.70x = 21,570.07 × 16,207.70
  4. Step 4: Simplify right side
    16,207.70x = 349,601,142.50
  5. Step 5: Solve for x
    x = 349,601,142.50/16,207.70
  6. Step 6: Final answer
    x = 21,570.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.