Home / 21,141,897.81-29,179,909.10-13,786,961.96

Finding the Fourth Proportional to 21,141,897.81, 29,179,909.10 and 13,786,961.96

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Solution

The fourth proportional to 21,141,897.81, 29,179,909.10 and 13,786,961.96 is: 19,028,674.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,897.81 : 29,179,909.10 = 13,786,961.96 : x
  2. Step 2: Convert to fraction form
    21,141,897.81/29,179,909.10 = 13,786,961.96/x
  3. Step 3: Cross multiply
    21,141,897.81x = 29,179,909.10 × 13,786,961.96
  4. Step 4: Simplify right side
    21,141,897.81x = 402,302,296,905,259.19
  5. Step 5: Solve for x
    x = 402,302,296,905,259.19/21,141,897.81
  6. Step 6: Final answer
    x = 19,028,674.75

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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.