Home / 18,739.28-28,108.92-4,888.16

Finding the Fourth Proportional to 18,739.28, 28,108.92 and 4,888.16

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Solution

The fourth proportional to 18,739.28, 28,108.92 and 4,888.16 is: 7,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.28 : 28,108.92 = 4,888.16 : x
  2. Step 2: Convert to fraction form
    18,739.28/28,108.92 = 4,888.16/x
  3. Step 3: Cross multiply
    18,739.28x = 28,108.92 × 4,888.16
  4. Step 4: Simplify right side
    18,739.28x = 137,400,898.39
  5. Step 5: Solve for x
    x = 137,400,898.39/18,739.28
  6. Step 6: Final answer
    x = 7,332.24

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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.