Home / 20,386,649.22-28,133,567.76-11,219,291.97

Finding the Fourth Proportional to 20,386,649.22, 28,133,567.76 and 11,219,291.97

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Solution

The fourth proportional to 20,386,649.22, 28,133,567.76 and 11,219,291.97 is: 15,482,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,649.22 : 28,133,567.76 = 11,219,291.97 : x
  2. Step 2: Convert to fraction form
    20,386,649.22/28,133,567.76 = 11,219,291.97/x
  3. Step 3: Cross multiply
    20,386,649.22x = 28,133,567.76 × 11,219,291.97
  4. Step 4: Simplify right side
    20,386,649.22x = 315,638,710,857,218.94
  5. Step 5: Solve for x
    x = 315,638,710,857,218.94/20,386,649.22
  6. Step 6: Final answer
    x = 15,482,618.43

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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.