Home / 21,513.05-29,671.58-15,564.41

Finding the Fourth Proportional to 21,513.05, 29,671.58 and 15,564.41

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Solution

The fourth proportional to 21,513.05, 29,671.58 and 15,564.41 is: 21,467.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.05 : 29,671.58 = 15,564.41 : x
  2. Step 2: Convert to fraction form
    21,513.05/29,671.58 = 15,564.41/x
  3. Step 3: Cross multiply
    21,513.05x = 29,671.58 × 15,564.41
  4. Step 4: Simplify right side
    21,513.05x = 461,820,636.47
  5. Step 5: Solve for x
    x = 461,820,636.47/21,513.05
  6. Step 6: Final answer
    x = 21,467.00

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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.