Home / 13,981.91-20,976.03-4,621.55

Finding the Fourth Proportional to 13,981.91, 20,976.03 and 4,621.55

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Solution

The fourth proportional to 13,981.91, 20,976.03 and 4,621.55 is: 6,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.91 : 20,976.03 = 4,621.55 : x
  2. Step 2: Convert to fraction form
    13,981.91/20,976.03 = 4,621.55/x
  3. Step 3: Cross multiply
    13,981.91x = 20,976.03 × 4,621.55
  4. Step 4: Simplify right side
    13,981.91x = 96,941,666.57
  5. Step 5: Solve for x
    x = 96,941,666.57/13,981.91
  6. Step 6: Final answer
    x = 6,933.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.