Home / 21,139,799.90-31,687,031.59-13,850,507.03

Finding the Fourth Proportional to 21,139,799.90, 31,687,031.59 and 13,850,507.03

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Solution

The fourth proportional to 21,139,799.90, 31,687,031.59 and 13,850,507.03 is: 20,760,908.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,799.90 : 31,687,031.59 = 13,850,507.03 : x
  2. Step 2: Convert to fraction form
    21,139,799.90/31,687,031.59 = 13,850,507.03/x
  3. Step 3: Cross multiply
    21,139,799.90x = 31,687,031.59 × 13,850,507.03
  4. Step 4: Simplify right side
    21,139,799.90x = 438,881,453,604,065.62
  5. Step 5: Solve for x
    x = 438,881,453,604,065.62/21,139,799.90
  6. Step 6: Final answer
    x = 20,760,908.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.