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Finding the Fourth Proportional to 13,779.68, 19,016.08 and 7,492.06

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Solution

The fourth proportional to 13,779.68, 19,016.08 and 7,492.06 is: 10,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.68 : 19,016.08 = 7,492.06 : x
  2. Step 2: Convert to fraction form
    13,779.68/19,016.08 = 7,492.06/x
  3. Step 3: Cross multiply
    13,779.68x = 19,016.08 × 7,492.06
  4. Step 4: Simplify right side
    13,779.68x = 142,469,612.32
  5. Step 5: Solve for x
    x = 142,469,612.32/13,779.68
  6. Step 6: Final answer
    x = 10,339.11

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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.