Home / 20,923.16-28,873.83-12,539.66

Finding the Fourth Proportional to 20,923.16, 28,873.83 and 12,539.66

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Solution

The fourth proportional to 20,923.16, 28,873.83 and 12,539.66 is: 17,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.16 : 28,873.83 = 12,539.66 : x
  2. Step 2: Convert to fraction form
    20,923.16/28,873.83 = 12,539.66/x
  3. Step 3: Cross multiply
    20,923.16x = 28,873.83 × 12,539.66
  4. Step 4: Simplify right side
    20,923.16x = 362,068,011.10
  5. Step 5: Solve for x
    x = 362,068,011.10/20,923.16
  6. Step 6: Final answer
    x = 17,304.65

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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.