Home / 21,321.90-29,424.15-12,374.64

Finding the Fourth Proportional to 21,321.90, 29,424.15 and 12,374.64

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Solution

The fourth proportional to 21,321.90, 29,424.15 and 12,374.64 is: 17,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.90 : 29,424.15 = 12,374.64 : x
  2. Step 2: Convert to fraction form
    21,321.90/29,424.15 = 12,374.64/x
  3. Step 3: Cross multiply
    21,321.90x = 29,424.15 × 12,374.64
  4. Step 4: Simplify right side
    21,321.90x = 364,113,263.56
  5. Step 5: Solve for x
    x = 364,113,263.56/21,321.90
  6. Step 6: Final answer
    x = 17,076.96

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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.