Home / 13,148.12-19,720.02-4,381.88

Finding the Fourth Proportional to 13,148.12, 19,720.02 and 4,381.88

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Solution

The fourth proportional to 13,148.12, 19,720.02 and 4,381.88 is: 6,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.12 : 19,720.02 = 4,381.88 : x
  2. Step 2: Convert to fraction form
    13,148.12/19,720.02 = 4,381.88/x
  3. Step 3: Cross multiply
    13,148.12x = 19,720.02 × 4,381.88
  4. Step 4: Simplify right side
    13,148.12x = 86,410,761.24
  5. Step 5: Solve for x
    x = 86,410,761.24/13,148.12
  6. Step 6: Final answer
    x = 6,572.10

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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.