Home / 20,981.16-31,596.75-18,924.84

Finding the Fourth Proportional to 20,981.16, 31,596.75 and 18,924.84

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Solution

The fourth proportional to 20,981.16, 31,596.75 and 18,924.84 is: 28,500.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.16 : 31,596.75 = 18,924.84 : x
  2. Step 2: Convert to fraction form
    20,981.16/31,596.75 = 18,924.84/x
  3. Step 3: Cross multiply
    20,981.16x = 31,596.75 × 18,924.84
  4. Step 4: Simplify right side
    20,981.16x = 597,963,438.27
  5. Step 5: Solve for x
    x = 597,963,438.27/20,981.16
  6. Step 6: Final answer
    x = 28,500.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.