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Finding the Fourth Proportional to 15,309.14, 22,962.90 and 4,920.08

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Solution

The fourth proportional to 15,309.14, 22,962.90 and 4,920.08 is: 7,379.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.14 : 22,962.90 = 4,920.08 : x
  2. Step 2: Convert to fraction form
    15,309.14/22,962.90 = 4,920.08/x
  3. Step 3: Cross multiply
    15,309.14x = 22,962.90 × 4,920.08
  4. Step 4: Simplify right side
    15,309.14x = 112,979,305.03
  5. Step 5: Solve for x
    x = 112,979,305.03/15,309.14
  6. Step 6: Final answer
    x = 7,379.86

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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.