Home / 15,338,765.72-21,175,166.40-9,539,415.74

Finding the Fourth Proportional to 15,338,765.72, 21,175,166.40 and 9,539,415.74

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Solution

The fourth proportional to 15,338,765.72, 21,175,166.40 and 9,539,415.74 is: 13,169,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338,765.72 : 21,175,166.40 = 9,539,415.74 : x
  2. Step 2: Convert to fraction form
    15,338,765.72/21,175,166.40 = 9,539,415.74/x
  3. Step 3: Cross multiply
    15,338,765.72x = 21,175,166.40 × 9,539,415.74
  4. Step 4: Simplify right side
    15,338,765.72x = 201,998,715,653,279.12
  5. Step 5: Solve for x
    x = 201,998,715,653,279.12/15,338,765.72
  6. Step 6: Final answer
    x = 13,169,163.63

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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.