Home / 20,575,368.68-28,380,995.62-13,220,561.32

Finding the Fourth Proportional to 20,575,368.68, 28,380,995.62 and 13,220,561.32

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Solution

The fourth proportional to 20,575,368.68, 28,380,995.62 and 13,220,561.32 is: 18,236,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575,368.68 : 28,380,995.62 = 13,220,561.32 : x
  2. Step 2: Convert to fraction form
    20,575,368.68/28,380,995.62 = 13,220,561.32/x
  3. Step 3: Cross multiply
    20,575,368.68x = 28,380,995.62 × 13,220,561.32
  4. Step 4: Simplify right side
    20,575,368.68x = 375,212,692,916,861.44
  5. Step 5: Solve for x
    x = 375,212,692,916,861.44/20,575,368.68
  6. Step 6: Final answer
    x = 18,236,013.11

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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.