Home / 18,727.54-28,110.11-8,739.12

Finding the Fourth Proportional to 18,727.54, 28,110.11 and 8,739.12

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Solution

The fourth proportional to 18,727.54, 28,110.11 and 8,739.12 is: 13,117.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.54 : 28,110.11 = 8,739.12 : x
  2. Step 2: Convert to fraction form
    18,727.54/28,110.11 = 8,739.12/x
  3. Step 3: Cross multiply
    18,727.54x = 28,110.11 × 8,739.12
  4. Step 4: Simplify right side
    18,727.54x = 245,657,686.22
  5. Step 5: Solve for x
    x = 245,657,686.22/18,727.54
  6. Step 6: Final answer
    x = 13,117.46

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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.