Home / 19,376.32-26,731.20-11,920

Finding the Fourth Proportional to 19,376.32, 26,731.20 and 11,920

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Solution

The fourth proportional to 19,376.32, 26,731.20 and 11,920 is: 16,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,376.32 : 26,731.20 = 11,920 : x
  2. Step 2: Convert to fraction form
    19,376.32/26,731.20 = 11,920/x
  3. Step 3: Cross multiply
    19,376.32x = 26,731.20 × 11,920
  4. Step 4: Simplify right side
    19,376.32x = 318,635,904
  5. Step 5: Solve for x
    x = 318,635,904/19,376.32
  6. Step 6: Final answer
    x = 16,444.60

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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.