Home / 21,254.32-29,333.51-12,761.20

Finding the Fourth Proportional to 21,254.32, 29,333.51 and 12,761.20

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Solution

The fourth proportional to 21,254.32, 29,333.51 and 12,761.20 is: 17,611.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.32 : 29,333.51 = 12,761.20 : x
  2. Step 2: Convert to fraction form
    21,254.32/29,333.51 = 12,761.20/x
  3. Step 3: Cross multiply
    21,254.32x = 29,333.51 × 12,761.20
  4. Step 4: Simplify right side
    21,254.32x = 374,330,787.81
  5. Step 5: Solve for x
    x = 374,330,787.81/21,254.32
  6. Step 6: Final answer
    x = 17,611.99

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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.