Home / 20,927.16-28,884.96-12,964.86

Finding the Fourth Proportional to 20,927.16, 28,884.96 and 12,964.86

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Solution

The fourth proportional to 20,927.16, 28,884.96 and 12,964.86 is: 17,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.16 : 28,884.96 = 12,964.86 : x
  2. Step 2: Convert to fraction form
    20,927.16/28,884.96 = 12,964.86/x
  3. Step 3: Cross multiply
    20,927.16x = 28,884.96 × 12,964.86
  4. Step 4: Simplify right side
    20,927.16x = 374,489,462.51
  5. Step 5: Solve for x
    x = 374,489,462.51/20,927.16
  6. Step 6: Final answer
    x = 17,894.90

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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.