Home / 13,526.22-18,678.94-12,789.92

Finding the Fourth Proportional to 13,526.22, 18,678.94 and 12,789.92

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Solution

The fourth proportional to 13,526.22, 18,678.94 and 12,789.92 is: 17,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,526.22 : 18,678.94 = 12,789.92 : x
  2. Step 2: Convert to fraction form
    13,526.22/18,678.94 = 12,789.92/x
  3. Step 3: Cross multiply
    13,526.22x = 18,678.94 × 12,789.92
  4. Step 4: Simplify right side
    13,526.22x = 238,902,148.28
  5. Step 5: Solve for x
    x = 238,902,148.28/13,526.22
  6. Step 6: Final answer
    x = 17,662.15

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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.