Home / 20,681,507.59-28,539,559.82-11,854,630.85

Finding the Fourth Proportional to 20,681,507.59, 28,539,559.82 and 11,854,630.85

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Solution

The fourth proportional to 20,681,507.59, 28,539,559.82 and 11,854,630.85 is: 16,358,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,507.59 : 28,539,559.82 = 11,854,630.85 : x
  2. Step 2: Convert to fraction form
    20,681,507.59/28,539,559.82 = 11,854,630.85/x
  3. Step 3: Cross multiply
    20,681,507.59x = 28,539,559.82 × 11,854,630.85
  4. Step 4: Simplify right side
    20,681,507.59x = 338,325,946,174,531.25
  5. Step 5: Solve for x
    x = 338,325,946,174,531.25/20,681,507.59
  6. Step 6: Final answer
    x = 16,358,862.85

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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.