Home / 21,141.74-29,168.12-12,637.96

Finding the Fourth Proportional to 21,141.74, 29,168.12 and 12,637.96

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Solution

The fourth proportional to 21,141.74, 29,168.12 and 12,637.96 is: 17,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.74 : 29,168.12 = 12,637.96 : x
  2. Step 2: Convert to fraction form
    21,141.74/29,168.12 = 12,637.96/x
  3. Step 3: Cross multiply
    21,141.74x = 29,168.12 × 12,637.96
  4. Step 4: Simplify right side
    21,141.74x = 368,625,533.84
  5. Step 5: Solve for x
    x = 368,625,533.84/21,141.74
  6. Step 6: Final answer
    x = 17,435.91

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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.