Home / 20,779.13-28,675.19-12,284.33

Finding the Fourth Proportional to 20,779.13, 28,675.19 and 12,284.33

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Solution

The fourth proportional to 20,779.13, 28,675.19 and 12,284.33 is: 16,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.13 : 28,675.19 = 12,284.33 : x
  2. Step 2: Convert to fraction form
    20,779.13/28,675.19 = 12,284.33/x
  3. Step 3: Cross multiply
    20,779.13x = 28,675.19 × 12,284.33
  4. Step 4: Simplify right side
    20,779.13x = 352,255,384.11
  5. Step 5: Solve for x
    x = 352,255,384.11/20,779.13
  6. Step 6: Final answer
    x = 16,952.36

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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.