Home / 21,190,173.89-29,235,056.49-13,350,386.39

Finding the Fourth Proportional to 21,190,173.89, 29,235,056.49 and 13,350,386.39

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Solution

The fourth proportional to 21,190,173.89, 29,235,056.49 and 13,350,386.39 is: 18,418,881.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,173.89 : 29,235,056.49 = 13,350,386.39 : x
  2. Step 2: Convert to fraction form
    21,190,173.89/29,235,056.49 = 13,350,386.39/x
  3. Step 3: Cross multiply
    21,190,173.89x = 29,235,056.49 × 13,350,386.39
  4. Step 4: Simplify right side
    21,190,173.89x = 390,299,300,293,249.06
  5. Step 5: Solve for x
    x = 390,299,300,293,249.06/21,190,173.89
  6. Step 6: Final answer
    x = 18,418,881.43

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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.