Home / 20,698,149.10-28,563,636.90-11,406,051.52

Finding the Fourth Proportional to 20,698,149.10, 28,563,636.90 and 11,406,051.52

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Solution

The fourth proportional to 20,698,149.10, 28,563,636.90 and 11,406,051.52 is: 15,740,456.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,149.10 : 28,563,636.90 = 11,406,051.52 : x
  2. Step 2: Convert to fraction form
    20,698,149.10/28,563,636.90 = 11,406,051.52/x
  3. Step 3: Cross multiply
    20,698,149.10x = 28,563,636.90 × 11,406,051.52
  4. Step 4: Simplify right side
    20,698,149.10x = 325,798,314,079,973.06
  5. Step 5: Solve for x
    x = 325,798,314,079,973.06/20,698,149.10
  6. Step 6: Final answer
    x = 15,740,456.43

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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.