Home / 14,387.64-21,568.49-5,620.40

Finding the Fourth Proportional to 14,387.64, 21,568.49 and 5,620.40

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Solution

The fourth proportional to 14,387.64, 21,568.49 and 5,620.40 is: 8,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.64 : 21,568.49 = 5,620.40 : x
  2. Step 2: Convert to fraction form
    14,387.64/21,568.49 = 5,620.40/x
  3. Step 3: Cross multiply
    14,387.64x = 21,568.49 × 5,620.40
  4. Step 4: Simplify right side
    14,387.64x = 121,223,541.20
  5. Step 5: Solve for x
    x = 121,223,541.20/14,387.64
  6. Step 6: Final answer
    x = 8,425.53

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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.