Home / 28,946.28-43,412.85-8,171.40

Finding the Fourth Proportional to 28,946.28, 43,412.85 and 8,171.40

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Solution

The fourth proportional to 28,946.28, 43,412.85 and 8,171.40 is: 12,255.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,946.28 : 43,412.85 = 8,171.40 : x
  2. Step 2: Convert to fraction form
    28,946.28/43,412.85 = 8,171.40/x
  3. Step 3: Cross multiply
    28,946.28x = 43,412.85 × 8,171.40
  4. Step 4: Simplify right side
    28,946.28x = 354,743,762.49
  5. Step 5: Solve for x
    x = 354,743,762.49/28,946.28
  6. Step 6: Final answer
    x = 12,255.25

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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.