Home / 21,161,867.36-29,175,966.16-13,706,264.48

Finding the Fourth Proportional to 21,161,867.36, 29,175,966.16 and 13,706,264.48

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Solution

The fourth proportional to 21,161,867.36, 29,175,966.16 and 13,706,264.48 is: 18,896,891.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161,867.36 : 29,175,966.16 = 13,706,264.48 : x
  2. Step 2: Convert to fraction form
    21,161,867.36/29,175,966.16 = 13,706,264.48/x
  3. Step 3: Cross multiply
    21,161,867.36x = 29,175,966.16 × 13,706,264.48
  4. Step 4: Simplify right side
    21,161,867.36x = 399,893,508,648,490
  5. Step 5: Solve for x
    x = 399,893,508,648,490/21,161,867.36
  6. Step 6: Final answer
    x = 18,896,891.37

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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.