Home / 21,779.33-30,051.52-14,619.64

Finding the Fourth Proportional to 21,779.33, 30,051.52 and 14,619.64

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Solution

The fourth proportional to 21,779.33, 30,051.52 and 14,619.64 is: 20,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.33 : 30,051.52 = 14,619.64 : x
  2. Step 2: Convert to fraction form
    21,779.33/30,051.52 = 14,619.64/x
  3. Step 3: Cross multiply
    21,779.33x = 30,051.52 × 14,619.64
  4. Step 4: Simplify right side
    21,779.33x = 439,342,403.85
  5. Step 5: Solve for x
    x = 439,342,403.85/21,779.33
  6. Step 6: Final answer
    x = 20,172.45

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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.