Home / 12,281.51-18,422.46-4,490.25

Finding the Fourth Proportional to 12,281.51, 18,422.46 and 4,490.25

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Solution

The fourth proportional to 12,281.51, 18,422.46 and 4,490.25 is: 6,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.51 : 18,422.46 = 4,490.25 : x
  2. Step 2: Convert to fraction form
    12,281.51/18,422.46 = 4,490.25/x
  3. Step 3: Cross multiply
    12,281.51x = 18,422.46 × 4,490.25
  4. Step 4: Simplify right side
    12,281.51x = 82,721,451.02
  5. Step 5: Solve for x
    x = 82,721,451.02/12,281.51
  6. Step 6: Final answer
    x = 6,735.45

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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.