Home / 21,069,509.28-29,078,283.62-11,902,742.88

Finding the Fourth Proportional to 21,069,509.28, 29,078,283.62 and 11,902,742.88

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Solution

The fourth proportional to 21,069,509.28, 29,078,283.62 and 11,902,742.88 is: 16,427,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,509.28 : 29,078,283.62 = 11,902,742.88 : x
  2. Step 2: Convert to fraction form
    21,069,509.28/29,078,283.62 = 11,902,742.88/x
  3. Step 3: Cross multiply
    21,069,509.28x = 29,078,283.62 × 11,902,742.88
  4. Step 4: Simplify right side
    21,069,509.28x = 346,111,333,320,575.69
  5. Step 5: Solve for x
    x = 346,111,333,320,575.69/21,069,509.28
  6. Step 6: Final answer
    x = 16,427,118.86

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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.