Home / 13,327.08-19,991.68-7,780.98

Finding the Fourth Proportional to 13,327.08, 19,991.68 and 7,780.98

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Solution

The fourth proportional to 13,327.08, 19,991.68 and 7,780.98 is: 11,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.08 : 19,991.68 = 7,780.98 : x
  2. Step 2: Convert to fraction form
    13,327.08/19,991.68 = 7,780.98/x
  3. Step 3: Cross multiply
    13,327.08x = 19,991.68 × 7,780.98
  4. Step 4: Simplify right side
    13,327.08x = 155,554,862.25
  5. Step 5: Solve for x
    x = 155,554,862.25/13,327.08
  6. Step 6: Final answer
    x = 11,672.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.