Home / 34,215.51-47,218.15-21,469.20

Finding the Fourth Proportional to 34,215.51, 47,218.15 and 21,469.20

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Solution

The fourth proportional to 34,215.51, 47,218.15 and 21,469.20 is: 29,627.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,215.51 : 47,218.15 = 21,469.20 : x
  2. Step 2: Convert to fraction form
    34,215.51/47,218.15 = 21,469.20/x
  3. Step 3: Cross multiply
    34,215.51x = 47,218.15 × 21,469.20
  4. Step 4: Simplify right side
    34,215.51x = 1,013,735,905.98
  5. Step 5: Solve for x
    x = 1,013,735,905.98/34,215.51
  6. Step 6: Final answer
    x = 29,627.96

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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.