Home / 18,741.28-28,111.92-4,890.16

Finding the Fourth Proportional to 18,741.28, 28,111.92 and 4,890.16

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Solution

The fourth proportional to 18,741.28, 28,111.92 and 4,890.16 is: 7,335.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.28 : 28,111.92 = 4,890.16 : x
  2. Step 2: Convert to fraction form
    18,741.28/28,111.92 = 4,890.16/x
  3. Step 3: Cross multiply
    18,741.28x = 28,111.92 × 4,890.16
  4. Step 4: Simplify right side
    18,741.28x = 137,471,786.71
  5. Step 5: Solve for x
    x = 137,471,786.71/18,741.28
  6. Step 6: Final answer
    x = 7,335.24

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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.