Home / 21,476,388.78-29,637,421.40-11,818,596.78

Finding the Fourth Proportional to 21,476,388.78, 29,637,421.40 and 11,818,596.78

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Solution

The fourth proportional to 21,476,388.78, 29,637,421.40 and 11,818,596.78 is: 16,309,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476,388.78 : 29,637,421.40 = 11,818,596.78 : x
  2. Step 2: Convert to fraction form
    21,476,388.78/29,637,421.40 = 11,818,596.78/x
  3. Step 3: Cross multiply
    21,476,388.78x = 29,637,421.40 × 11,818,596.78
  4. Step 4: Simplify right side
    21,476,388.78x = 350,272,733,125,543.06
  5. Step 5: Solve for x
    x = 350,272,733,125,543.06/21,476,388.78
  6. Step 6: Final answer
    x = 16,309,666.24

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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.