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Finding the Fourth Proportional to 13,385.01, 20,080.70 and 4,620

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Solution

The fourth proportional to 13,385.01, 20,080.70 and 4,620 is: 6,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.01 : 20,080.70 = 4,620 : x
  2. Step 2: Convert to fraction form
    13,385.01/20,080.70 = 4,620/x
  3. Step 3: Cross multiply
    13,385.01x = 20,080.70 × 4,620
  4. Step 4: Simplify right side
    13,385.01x = 92,772,834
  5. Step 5: Solve for x
    x = 92,772,834/13,385.01
  6. Step 6: Final answer
    x = 6,931.10

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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.