Home / 20,484.06-28,257.96-13,779.48

Finding the Fourth Proportional to 20,484.06, 28,257.96 and 13,779.48

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Solution

The fourth proportional to 20,484.06, 28,257.96 and 13,779.48 is: 19,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.06 : 28,257.96 = 13,779.48 : x
  2. Step 2: Convert to fraction form
    20,484.06/28,257.96 = 13,779.48/x
  3. Step 3: Cross multiply
    20,484.06x = 28,257.96 × 13,779.48
  4. Step 4: Simplify right side
    20,484.06x = 389,379,994.66
  5. Step 5: Solve for x
    x = 389,379,994.66/20,484.06
  6. Step 6: Final answer
    x = 19,008.93

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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.