Home / 20,899,386.57-28,850,805.34-12,530,716.63

Finding the Fourth Proportional to 20,899,386.57, 28,850,805.34 and 12,530,716.63

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Solution

The fourth proportional to 20,899,386.57, 28,850,805.34 and 12,530,716.63 is: 17,298,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899,386.57 : 28,850,805.34 = 12,530,716.63 : x
  2. Step 2: Convert to fraction form
    20,899,386.57/28,850,805.34 = 12,530,716.63/x
  3. Step 3: Cross multiply
    20,899,386.57x = 28,850,805.34 × 12,530,716.63
  4. Step 4: Simplify right side
    20,899,386.57x = 361,521,266,262,830.81
  5. Step 5: Solve for x
    x = 361,521,266,262,830.81/20,899,386.57
  6. Step 6: Final answer
    x = 17,298,175.96

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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.