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Finding the Fourth Proportional to 30,245.64, 45,354.15 and 10,521.74

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Solution

The fourth proportional to 30,245.64, 45,354.15 and 10,521.74 is: 15,777.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.64 : 45,354.15 = 10,521.74 : x
  2. Step 2: Convert to fraction form
    30,245.64/45,354.15 = 10,521.74/x
  3. Step 3: Cross multiply
    30,245.64x = 45,354.15 × 10,521.74
  4. Step 4: Simplify right side
    30,245.64x = 477,204,347.45
  5. Step 5: Solve for x
    x = 477,204,347.45/30,245.64
  6. Step 6: Final answer
    x = 15,777.62

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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.