Home / 20,403,772.70-28,156,658.67-11,111,157.45

Finding the Fourth Proportional to 20,403,772.70, 28,156,658.67 and 11,111,157.45

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Solution

The fourth proportional to 20,403,772.70, 28,156,658.67 and 11,111,157.45 is: 15,333,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,772.70 : 28,156,658.67 = 11,111,157.45 : x
  2. Step 2: Convert to fraction form
    20,403,772.70/28,156,658.67 = 11,111,157.45/x
  3. Step 3: Cross multiply
    20,403,772.70x = 28,156,658.67 × 11,111,157.45
  4. Step 4: Simplify right side
    20,403,772.70x = 312,853,067,748,277.56
  5. Step 5: Solve for x
    x = 312,853,067,748,277.56/20,403,772.70
  6. Step 6: Final answer
    x = 15,333,099.05

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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.