Home / 18,739.14-28,130.31-12,854.22

Finding the Fourth Proportional to 18,739.14, 28,130.31 and 12,854.22

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Solution

The fourth proportional to 18,739.14, 28,130.31 and 12,854.22 is: 19,296.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.14 : 28,130.31 = 12,854.22 : x
  2. Step 2: Convert to fraction form
    18,739.14/28,130.31 = 12,854.22/x
  3. Step 3: Cross multiply
    18,739.14x = 28,130.31 × 12,854.22
  4. Step 4: Simplify right side
    18,739.14x = 361,593,193.41
  5. Step 5: Solve for x
    x = 361,593,193.41/18,739.14
  6. Step 6: Final answer
    x = 19,296.15

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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.