Home / 20,965.48-28,932.37-12,018.18

Finding the Fourth Proportional to 20,965.48, 28,932.37 and 12,018.18

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Solution

The fourth proportional to 20,965.48, 28,932.37 and 12,018.18 is: 16,585.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.48 : 28,932.37 = 12,018.18 : x
  2. Step 2: Convert to fraction form
    20,965.48/28,932.37 = 12,018.18/x
  3. Step 3: Cross multiply
    20,965.48x = 28,932.37 × 12,018.18
  4. Step 4: Simplify right side
    20,965.48x = 347,714,430.49
  5. Step 5: Solve for x
    x = 347,714,430.49/20,965.48
  6. Step 6: Final answer
    x = 16,585.09

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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.