Home / 15,218,128.88-21,003,261.54-9,636,884.84

Finding the Fourth Proportional to 15,218,128.88, 21,003,261.54 and 9,636,884.84

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Solution

The fourth proportional to 15,218,128.88, 21,003,261.54 and 9,636,884.84 is: 13,300,321.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218,128.88 : 21,003,261.54 = 9,636,884.84 : x
  2. Step 2: Convert to fraction form
    15,218,128.88/21,003,261.54 = 9,636,884.84/x
  3. Step 3: Cross multiply
    15,218,128.88x = 21,003,261.54 × 9,636,884.84
  4. Step 4: Simplify right side
    15,218,128.88x = 202,406,012,725,381.03
  5. Step 5: Solve for x
    x = 202,406,012,725,381.03/15,218,128.88
  6. Step 6: Final answer
    x = 13,300,321.89

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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.