Home / 19,518.53-26,928.32-12,807.88

Finding the Fourth Proportional to 19,518.53, 26,928.32 and 12,807.88

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Solution

The fourth proportional to 19,518.53, 26,928.32 and 12,807.88 is: 17,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.53 : 26,928.32 = 12,807.88 : x
  2. Step 2: Convert to fraction form
    19,518.53/26,928.32 = 12,807.88/x
  3. Step 3: Cross multiply
    19,518.53x = 26,928.32 × 12,807.88
  4. Step 4: Simplify right side
    19,518.53x = 344,894,559.80
  5. Step 5: Solve for x
    x = 344,894,559.80/19,518.53
  6. Step 6: Final answer
    x = 17,670.11

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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.