Home / 20,345.28-28,076.94-14,387.64

Finding the Fourth Proportional to 20,345.28, 28,076.94 and 14,387.64

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Solution

The fourth proportional to 20,345.28, 28,076.94 and 14,387.64 is: 19,855.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.28 : 28,076.94 = 14,387.64 : x
  2. Step 2: Convert to fraction form
    20,345.28/28,076.94 = 14,387.64/x
  3. Step 3: Cross multiply
    20,345.28x = 28,076.94 × 14,387.64
  4. Step 4: Simplify right side
    20,345.28x = 403,960,905.02
  5. Step 5: Solve for x
    x = 403,960,905.02/20,345.28
  6. Step 6: Final answer
    x = 19,855.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.