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Finding the Fourth Proportional to 20,167.65, 30,260.39 and 7,029.45

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Solution

The fourth proportional to 20,167.65, 30,260.39 and 7,029.45 is: 10,547.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.65 : 30,260.39 = 7,029.45 : x
  2. Step 2: Convert to fraction form
    20,167.65/30,260.39 = 7,029.45/x
  3. Step 3: Cross multiply
    20,167.65x = 30,260.39 × 7,029.45
  4. Step 4: Simplify right side
    20,167.65x = 212,713,863.34
  5. Step 5: Solve for x
    x = 212,713,863.34/20,167.65
  6. Step 6: Final answer
    x = 10,547.28

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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.