Home / 18,821.76-25,975.20-10,439.04

Finding the Fourth Proportional to 18,821.76, 25,975.20 and 10,439.04

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Solution

The fourth proportional to 18,821.76, 25,975.20 and 10,439.04 is: 14,406.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.76 : 25,975.20 = 10,439.04 : x
  2. Step 2: Convert to fraction form
    18,821.76/25,975.20 = 10,439.04/x
  3. Step 3: Cross multiply
    18,821.76x = 25,975.20 × 10,439.04
  4. Step 4: Simplify right side
    18,821.76x = 271,156,151.81
  5. Step 5: Solve for x
    x = 271,156,151.81/18,821.76
  6. Step 6: Final answer
    x = 14,406.52

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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.