Home / 21,411.57-29,548.98-11,851.41

Finding the Fourth Proportional to 21,411.57, 29,548.98 and 11,851.41

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Solution

The fourth proportional to 21,411.57, 29,548.98 and 11,851.41 is: 16,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.57 : 29,548.98 = 11,851.41 : x
  2. Step 2: Convert to fraction form
    21,411.57/29,548.98 = 11,851.41/x
  3. Step 3: Cross multiply
    21,411.57x = 29,548.98 × 11,851.41
  4. Step 4: Simplify right side
    21,411.57x = 350,197,077.06
  5. Step 5: Solve for x
    x = 350,197,077.06/21,411.57
  6. Step 6: Final answer
    x = 16,355.51

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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.