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Finding the Fourth Proportional to 13,779.74, 19,016.08 and 7,492.08

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Solution

The fourth proportional to 13,779.74, 19,016.08 and 7,492.08 is: 10,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.74 : 19,016.08 = 7,492.08 : x
  2. Step 2: Convert to fraction form
    13,779.74/19,016.08 = 7,492.08/x
  3. Step 3: Cross multiply
    13,779.74x = 19,016.08 × 7,492.08
  4. Step 4: Simplify right side
    13,779.74x = 142,469,992.65
  5. Step 5: Solve for x
    x = 142,469,992.65/13,779.74
  6. Step 6: Final answer
    x = 10,339.09

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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.