Home / 21,278,994-29,365,044.54-12,111,636.76

Finding the Fourth Proportional to 21,278,994, 29,365,044.54 and 12,111,636.76

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Solution

The fourth proportional to 21,278,994, 29,365,044.54 and 12,111,636.76 is: 16,714,077.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,994 : 29,365,044.54 = 12,111,636.76 : x
  2. Step 2: Convert to fraction form
    21,278,994/29,365,044.54 = 12,111,636.76/x
  3. Step 3: Cross multiply
    21,278,994x = 29,365,044.54 × 12,111,636.76
  4. Step 4: Simplify right side
    21,278,994x = 355,658,752,909,701.25
  5. Step 5: Solve for x
    x = 355,658,752,909,701.25/21,278,994
  6. Step 6: Final answer
    x = 16,714,077.41

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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.