Home / 21,104.75-29,127.31-12,152.63

Finding the Fourth Proportional to 21,104.75, 29,127.31 and 12,152.63

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Solution

The fourth proportional to 21,104.75, 29,127.31 and 12,152.63 is: 16,772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.75 : 29,127.31 = 12,152.63 : x
  2. Step 2: Convert to fraction form
    21,104.75/29,127.31 = 12,152.63/x
  3. Step 3: Cross multiply
    21,104.75x = 29,127.31 × 12,152.63
  4. Step 4: Simplify right side
    21,104.75x = 353,973,463.76
  5. Step 5: Solve for x
    x = 353,973,463.76/21,104.75
  6. Step 6: Final answer
    x = 16,772.22

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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.