Home / 20,403,774.70-28,156,661.43-11,111,159.45

Finding the Fourth Proportional to 20,403,774.70, 28,156,661.43 and 11,111,159.45

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Solution

The fourth proportional to 20,403,774.70, 28,156,661.43 and 11,111,159.45 is: 15,333,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,774.70 : 28,156,661.43 = 11,111,159.45 : x
  2. Step 2: Convert to fraction form
    20,403,774.70/28,156,661.43 = 11,111,159.45/x
  3. Step 3: Cross multiply
    20,403,774.70x = 28,156,661.43 × 11,111,159.45
  4. Step 4: Simplify right side
    20,403,774.70x = 312,853,154,728,395
  5. Step 5: Solve for x
    x = 312,853,154,728,395/20,403,774.70
  6. Step 6: Final answer
    x = 15,333,101.81

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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.