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Finding the Fourth Proportional to 30,566.61, 45,850.07 and 13,915.00

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Solution

The fourth proportional to 30,566.61, 45,850.07 and 13,915.00 is: 20,872.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,566.61 : 45,850.07 = 13,915.00 : x
  2. Step 2: Convert to fraction form
    30,566.61/45,850.07 = 13,915.00/x
  3. Step 3: Cross multiply
    30,566.61x = 45,850.07 × 13,915.00
  4. Step 4: Simplify right side
    30,566.61x = 638,003,730.18
  5. Step 5: Solve for x
    x = 638,003,730.18/30,566.61
  6. Step 6: Final answer
    x = 20,872.57

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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.