Home / 21,508.88-29,677.06-12,551.27

Finding the Fourth Proportional to 21,508.88, 29,677.06 and 12,551.27

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Solution

The fourth proportional to 21,508.88, 29,677.06 and 12,551.27 is: 17,317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.88 : 29,677.06 = 12,551.27 : x
  2. Step 2: Convert to fraction form
    21,508.88/29,677.06 = 12,551.27/x
  3. Step 3: Cross multiply
    21,508.88x = 29,677.06 × 12,551.27
  4. Step 4: Simplify right side
    21,508.88x = 372,484,792.87
  5. Step 5: Solve for x
    x = 372,484,792.87/21,508.88
  6. Step 6: Final answer
    x = 17,317.72

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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.