Home / 28,302.48-42,406.44-19,968.72

Finding the Fourth Proportional to 28,302.48, 42,406.44 and 19,968.72

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Solution

The fourth proportional to 28,302.48, 42,406.44 and 19,968.72 is: 29,919.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,302.48 : 42,406.44 = 19,968.72 : x
  2. Step 2: Convert to fraction form
    28,302.48/42,406.44 = 19,968.72/x
  3. Step 3: Cross multiply
    28,302.48x = 42,406.44 × 19,968.72
  4. Step 4: Simplify right side
    28,302.48x = 846,802,326.56
  5. Step 5: Solve for x
    x = 846,802,326.56/28,302.48
  6. Step 6: Final answer
    x = 29,919.72

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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.