Home / 28,880.42-43,301.94-18,989.71

Finding the Fourth Proportional to 28,880.42, 43,301.94 and 18,989.71

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Solution

The fourth proportional to 28,880.42, 43,301.94 and 18,989.71 is: 28,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.42 : 43,301.94 = 18,989.71 : x
  2. Step 2: Convert to fraction form
    28,880.42/43,301.94 = 18,989.71/x
  3. Step 3: Cross multiply
    28,880.42x = 43,301.94 × 18,989.71
  4. Step 4: Simplify right side
    28,880.42x = 822,291,210.39
  5. Step 5: Solve for x
    x = 822,291,210.39/28,880.42
  6. Step 6: Final answer
    x = 28,472.28

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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.