Home / 28,934.28-43,384.56-14,128.20

Finding the Fourth Proportional to 28,934.28, 43,384.56 and 14,128.20

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Solution

The fourth proportional to 28,934.28, 43,384.56 and 14,128.20 is: 21,184.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934.28 : 43,384.56 = 14,128.20 : x
  2. Step 2: Convert to fraction form
    28,934.28/43,384.56 = 14,128.20/x
  3. Step 3: Cross multiply
    28,934.28x = 43,384.56 × 14,128.20
  4. Step 4: Simplify right side
    28,934.28x = 612,945,740.59
  5. Step 5: Solve for x
    x = 612,945,740.59/28,934.28
  6. Step 6: Final answer
    x = 21,184.07

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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.