Home / 18,981.80-28,457.96-12,304.20

Finding the Fourth Proportional to 18,981.80, 28,457.96 and 12,304.20

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Solution

The fourth proportional to 18,981.80, 28,457.96 and 12,304.20 is: 18,446.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.80 : 28,457.96 = 12,304.20 : x
  2. Step 2: Convert to fraction form
    18,981.80/28,457.96 = 12,304.20/x
  3. Step 3: Cross multiply
    18,981.80x = 28,457.96 × 12,304.20
  4. Step 4: Simplify right side
    18,981.80x = 350,152,431.43
  5. Step 5: Solve for x
    x = 350,152,431.43/18,981.80
  6. Step 6: Final answer
    x = 18,446.75

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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.