Home / 21,720,748.96-29,972,885.52-12,553,985.44

Finding the Fourth Proportional to 21,720,748.96, 29,972,885.52 and 12,553,985.44

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Solution

The fourth proportional to 21,720,748.96, 29,972,885.52 and 12,553,985.44 is: 17,323,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720,748.96 : 29,972,885.52 = 12,553,985.44 : x
  2. Step 2: Convert to fraction form
    21,720,748.96/29,972,885.52 = 12,553,985.44/x
  3. Step 3: Cross multiply
    21,720,748.96x = 29,972,885.52 × 12,553,985.44
  4. Step 4: Simplify right side
    21,720,748.96x = 376,279,168,412,866.81
  5. Step 5: Solve for x
    x = 376,279,168,412,866.81/21,720,748.96
  6. Step 6: Final answer
    x = 17,323,489.59

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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.