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Finding the Fourth Proportional to 30,609.10, 45,913.65 and 10,909.90

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Solution

The fourth proportional to 30,609.10, 45,913.65 and 10,909.90 is: 16,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609.10 : 45,913.65 = 10,909.90 : x
  2. Step 2: Convert to fraction form
    30,609.10/45,913.65 = 10,909.90/x
  3. Step 3: Cross multiply
    30,609.10x = 45,913.65 × 10,909.90
  4. Step 4: Simplify right side
    30,609.10x = 500,913,330.14
  5. Step 5: Solve for x
    x = 500,913,330.14/30,609.10
  6. Step 6: Final answer
    x = 16,364.85

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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.