Home / 20,508.24-28,301.40-12,010.80

Finding the Fourth Proportional to 20,508.24, 28,301.40 and 12,010.80

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Solution

The fourth proportional to 20,508.24, 28,301.40 and 12,010.80 is: 16,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.24 : 28,301.40 = 12,010.80 : x
  2. Step 2: Convert to fraction form
    20,508.24/28,301.40 = 12,010.80/x
  3. Step 3: Cross multiply
    20,508.24x = 28,301.40 × 12,010.80
  4. Step 4: Simplify right side
    20,508.24x = 339,922,455.12
  5. Step 5: Solve for x
    x = 339,922,455.12/20,508.24
  6. Step 6: Final answer
    x = 16,574.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.