Home / 21,122,173.17-29,147,590.94-12,971,836.53

Finding the Fourth Proportional to 21,122,173.17, 29,147,590.94 and 12,971,836.53

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Solution

The fourth proportional to 21,122,173.17, 29,147,590.94 and 12,971,836.53 is: 17,900,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122,173.17 : 29,147,590.94 = 12,971,836.53 : x
  2. Step 2: Convert to fraction form
    21,122,173.17/29,147,590.94 = 12,971,836.53/x
  3. Step 3: Cross multiply
    21,122,173.17x = 29,147,590.94 × 12,971,836.53
  4. Step 4: Simplify right side
    21,122,173.17x = 378,097,784,852,129.81
  5. Step 5: Solve for x
    x = 378,097,784,852,129.81/21,122,173.17
  6. Step 6: Final answer
    x = 17,900,515.34

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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.