Home / 19,712.50-27,207.82-12,999.34

Finding the Fourth Proportional to 19,712.50, 27,207.82 and 12,999.34

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Solution

The fourth proportional to 19,712.50, 27,207.82 and 12,999.34 is: 17,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.50 : 27,207.82 = 12,999.34 : x
  2. Step 2: Convert to fraction form
    19,712.50/27,207.82 = 12,999.34/x
  3. Step 3: Cross multiply
    19,712.50x = 27,207.82 × 12,999.34
  4. Step 4: Simplify right side
    19,712.50x = 353,683,702.84
  5. Step 5: Solve for x
    x = 353,683,702.84/19,712.50
  6. Step 6: Final answer
    x = 17,942.10

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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.