Home / 20,968.86-28,937.72-12,018.06

Finding the Fourth Proportional to 20,968.86, 28,937.72 and 12,018.06

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Solution

The fourth proportional to 20,968.86, 28,937.72 and 12,018.06 is: 16,585.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.86 : 28,937.72 = 12,018.06 : x
  2. Step 2: Convert to fraction form
    20,968.86/28,937.72 = 12,018.06/x
  3. Step 3: Cross multiply
    20,968.86x = 28,937.72 × 12,018.06
  4. Step 4: Simplify right side
    20,968.86x = 347,775,255.22
  5. Step 5: Solve for x
    x = 347,775,255.22/20,968.86
  6. Step 6: Final answer
    x = 16,585.32

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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.