Home / 20,968.63-28,937.51-12,017.86

Finding the Fourth Proportional to 20,968.63, 28,937.51 and 12,017.86

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Solution

The fourth proportional to 20,968.63, 28,937.51 and 12,017.86 is: 16,585.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.63 : 28,937.51 = 12,017.86 : x
  2. Step 2: Convert to fraction form
    20,968.63/28,937.51 = 12,017.86/x
  3. Step 3: Cross multiply
    20,968.63x = 28,937.51 × 12,017.86
  4. Step 4: Simplify right side
    20,968.63x = 347,767,093.83
  5. Step 5: Solve for x
    x = 347,767,093.83/20,968.63
  6. Step 6: Final answer
    x = 16,585.11

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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.