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Finding the Fourth Proportional to 30,339.95, 45,510.34 and 11,620.94

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Solution

The fourth proportional to 30,339.95, 45,510.34 and 11,620.94 is: 17,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.95 : 45,510.34 = 11,620.94 : x
  2. Step 2: Convert to fraction form
    30,339.95/45,510.34 = 11,620.94/x
  3. Step 3: Cross multiply
    30,339.95x = 45,510.34 × 11,620.94
  4. Step 4: Simplify right side
    30,339.95x = 528,872,673.92
  5. Step 5: Solve for x
    x = 528,872,673.92/30,339.95
  6. Step 6: Final answer
    x = 17,431.56

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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.