Home / 21,327.89-29,432.05-12,376.26

Finding the Fourth Proportional to 21,327.89, 29,432.05 and 12,376.26

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Solution

The fourth proportional to 21,327.89, 29,432.05 and 12,376.26 is: 17,078.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.89 : 29,432.05 = 12,376.26 : x
  2. Step 2: Convert to fraction form
    21,327.89/29,432.05 = 12,376.26/x
  3. Step 3: Cross multiply
    21,327.89x = 29,432.05 × 12,376.26
  4. Step 4: Simplify right side
    21,327.89x = 364,258,672.19
  5. Step 5: Solve for x
    x = 364,258,672.19/21,327.89
  6. Step 6: Final answer
    x = 17,078.99

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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.