Home / 13,921.47-20,878.09-4,058.10

Finding the Fourth Proportional to 13,921.47, 20,878.09 and 4,058.10

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Solution

The fourth proportional to 13,921.47, 20,878.09 and 4,058.10 is: 6,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.47 : 20,878.09 = 4,058.10 : x
  2. Step 2: Convert to fraction form
    13,921.47/20,878.09 = 4,058.10/x
  3. Step 3: Cross multiply
    13,921.47x = 20,878.09 × 4,058.10
  4. Step 4: Simplify right side
    13,921.47x = 84,725,366.88
  5. Step 5: Solve for x
    x = 84,725,366.88/13,921.47
  6. Step 6: Final answer
    x = 6,085.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.