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Finding the Fourth Proportional to 30,260, 41,730.08 and 18,158.64

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Solution

The fourth proportional to 30,260, 41,730.08 and 18,158.64 is: 25,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,260 : 41,730.08 = 18,158.64 : x
  2. Step 2: Convert to fraction form
    30,260/41,730.08 = 18,158.64/x
  3. Step 3: Cross multiply
    30,260x = 41,730.08 × 18,158.64
  4. Step 4: Simplify right side
    30,260x = 757,761,499.89
  5. Step 5: Solve for x
    x = 757,761,499.89/30,260
  6. Step 6: Final answer
    x = 25,041.69

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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.