Home / 13,992.48-20,879.10-12,521.52

Finding the Fourth Proportional to 13,992.48, 20,879.10 and 12,521.52

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Solution

The fourth proportional to 13,992.48, 20,879.10 and 12,521.52 is: 18,684.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.48 : 20,879.10 = 12,521.52 : x
  2. Step 2: Convert to fraction form
    13,992.48/20,879.10 = 12,521.52/x
  3. Step 3: Cross multiply
    13,992.48x = 20,879.10 × 12,521.52
  4. Step 4: Simplify right side
    13,992.48x = 261,438,068.23
  5. Step 5: Solve for x
    x = 261,438,068.23/13,992.48
  6. Step 6: Final answer
    x = 18,684.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.