Home / 20,538,213.12-28,343,779.20-11,371,864.32

Finding the Fourth Proportional to 20,538,213.12, 28,343,779.20 and 11,371,864.32

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Solution

The fourth proportional to 20,538,213.12, 28,343,779.20 and 11,371,864.32 is: 15,693,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,213.12 : 28,343,779.20 = 11,371,864.32 : x
  2. Step 2: Convert to fraction form
    20,538,213.12/28,343,779.20 = 11,371,864.32/x
  3. Step 3: Cross multiply
    20,538,213.12x = 28,343,779.20 × 11,371,864.32
  4. Step 4: Simplify right side
    20,538,213.12x = 322,321,611,378,438.12
  5. Step 5: Solve for x
    x = 322,321,611,378,438.12/20,538,213.12
  6. Step 6: Final answer
    x = 15,693,751.42

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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.