Home / 28,301.54-42,342.53-20,422.19

Finding the Fourth Proportional to 28,301.54, 42,342.53 and 20,422.19

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Solution

The fourth proportional to 28,301.54, 42,342.53 and 20,422.19 is: 30,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,301.54 : 42,342.53 = 20,422.19 : x
  2. Step 2: Convert to fraction form
    28,301.54/42,342.53 = 20,422.19/x
  3. Step 3: Cross multiply
    28,301.54x = 42,342.53 × 20,422.19
  4. Step 4: Simplify right side
    28,301.54x = 864,726,878.92
  5. Step 5: Solve for x
    x = 864,726,878.92/28,301.54
  6. Step 6: Final answer
    x = 30,554.06

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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.