Home / 19,779.08-27,300.29-13,729.75

Finding the Fourth Proportional to 19,779.08, 27,300.29 and 13,729.75

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Solution

The fourth proportional to 19,779.08, 27,300.29 and 13,729.75 is: 18,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.08 : 27,300.29 = 13,729.75 : x
  2. Step 2: Convert to fraction form
    19,779.08/27,300.29 = 13,729.75/x
  3. Step 3: Cross multiply
    19,779.08x = 27,300.29 × 13,729.75
  4. Step 4: Simplify right side
    19,779.08x = 374,826,019.73
  5. Step 5: Solve for x
    x = 374,826,019.73/19,779.08
  6. Step 6: Final answer
    x = 18,950.63

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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.