Home / 21,374.10-29,494.80-12,874.59

Finding the Fourth Proportional to 21,374.10, 29,494.80 and 12,874.59

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Solution

The fourth proportional to 21,374.10, 29,494.80 and 12,874.59 is: 17,766.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.10 : 29,494.80 = 12,874.59 : x
  2. Step 2: Convert to fraction form
    21,374.10/29,494.80 = 12,874.59/x
  3. Step 3: Cross multiply
    21,374.10x = 29,494.80 × 12,874.59
  4. Step 4: Simplify right side
    21,374.10x = 379,733,457.13
  5. Step 5: Solve for x
    x = 379,733,457.13/21,374.10
  6. Step 6: Final answer
    x = 17,766.06

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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.