Home / 13,718.10-20,581.02-3,857.46

Finding the Fourth Proportional to 13,718.10, 20,581.02 and 3,857.46

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Solution

The fourth proportional to 13,718.10, 20,581.02 and 3,857.46 is: 5,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.10 : 20,581.02 = 3,857.46 : x
  2. Step 2: Convert to fraction form
    13,718.10/20,581.02 = 3,857.46/x
  3. Step 3: Cross multiply
    13,718.10x = 20,581.02 × 3,857.46
  4. Step 4: Simplify right side
    13,718.10x = 79,390,461.41
  5. Step 5: Solve for x
    x = 79,390,461.41/13,718.10
  6. Step 6: Final answer
    x = 5,787.28

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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.