Home / 18,904.30-28,342.54-6,420.97

Finding the Fourth Proportional to 18,904.30, 28,342.54 and 6,420.97

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Solution

The fourth proportional to 18,904.30, 28,342.54 and 6,420.97 is: 9,626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.30 : 28,342.54 = 6,420.97 : x
  2. Step 2: Convert to fraction form
    18,904.30/28,342.54 = 6,420.97/x
  3. Step 3: Cross multiply
    18,904.30x = 28,342.54 × 6,420.97
  4. Step 4: Simplify right side
    18,904.30x = 181,986,642.52
  5. Step 5: Solve for x
    x = 181,986,642.52/18,904.30
  6. Step 6: Final answer
    x = 9,626.73

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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.