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Finding the Fourth Proportional to 30,475.89, 45,715.86 and 11,756.12

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Solution

The fourth proportional to 30,475.89, 45,715.86 and 11,756.12 is: 17,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,475.89 : 45,715.86 = 11,756.12 : x
  2. Step 2: Convert to fraction form
    30,475.89/45,715.86 = 11,756.12/x
  3. Step 3: Cross multiply
    30,475.89x = 45,715.86 × 11,756.12
  4. Step 4: Simplify right side
    30,475.89x = 537,440,907.48
  5. Step 5: Solve for x
    x = 537,440,907.48/30,475.89
  6. Step 6: Final answer
    x = 17,634.95

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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.