Home / 13,320.31-19,980.46-4,555.30

Finding the Fourth Proportional to 13,320.31, 19,980.46 and 4,555.30

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Solution

The fourth proportional to 13,320.31, 19,980.46 and 4,555.30 is: 6,832.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.31 : 19,980.46 = 4,555.30 : x
  2. Step 2: Convert to fraction form
    13,320.31/19,980.46 = 4,555.30/x
  3. Step 3: Cross multiply
    13,320.31x = 19,980.46 × 4,555.30
  4. Step 4: Simplify right side
    13,320.31x = 91,016,989.44
  5. Step 5: Solve for x
    x = 91,016,989.44/13,320.31
  6. Step 6: Final answer
    x = 6,832.95

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1.5x scale

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.