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Finding the Fourth Proportional to 30,098.58, 45,217.08 and 21,234.30

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Solution

The fourth proportional to 30,098.58, 45,217.08 and 21,234.30 is: 31,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,098.58 : 45,217.08 = 21,234.30 : x
  2. Step 2: Convert to fraction form
    30,098.58/45,217.08 = 21,234.30/x
  3. Step 3: Cross multiply
    30,098.58x = 45,217.08 × 21,234.30
  4. Step 4: Simplify right side
    30,098.58x = 960,153,041.84
  5. Step 5: Solve for x
    x = 960,153,041.84/30,098.58
  6. Step 6: Final answer
    x = 31,900.28

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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.