Home / 18,878.73-28,317.96-6,407.53

Finding the Fourth Proportional to 18,878.73, 28,317.96 and 6,407.53

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Solution

The fourth proportional to 18,878.73, 28,317.96 and 6,407.53 is: 9,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.73 : 28,317.96 = 6,407.53 : x
  2. Step 2: Convert to fraction form
    18,878.73/28,317.96 = 6,407.53/x
  3. Step 3: Cross multiply
    18,878.73x = 28,317.96 × 6,407.53
  4. Step 4: Simplify right side
    18,878.73x = 181,448,178.24
  5. Step 5: Solve for x
    x = 181,448,178.24/18,878.73
  6. Step 6: Final answer
    x = 9,611.25

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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.