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Finding the Fourth Proportional to 30,241.68, 45,363.54 and 10,520.40

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Solution

The fourth proportional to 30,241.68, 45,363.54 and 10,520.40 is: 15,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,241.68 : 45,363.54 = 10,520.40 : x
  2. Step 2: Convert to fraction form
    30,241.68/45,363.54 = 10,520.40/x
  3. Step 3: Cross multiply
    30,241.68x = 45,363.54 × 10,520.40
  4. Step 4: Simplify right side
    30,241.68x = 477,242,586.22
  5. Step 5: Solve for x
    x = 477,242,586.22/30,241.68
  6. Step 6: Final answer
    x = 15,780.95

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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.