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Finding the Fourth Proportional to 13,075.70, 18,044.02 and 7,485.62

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Solution

The fourth proportional to 13,075.70, 18,044.02 and 7,485.62 is: 10,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.70 : 18,044.02 = 7,485.62 : x
  2. Step 2: Convert to fraction form
    13,075.70/18,044.02 = 7,485.62/x
  3. Step 3: Cross multiply
    13,075.70x = 18,044.02 × 7,485.62
  4. Step 4: Simplify right side
    13,075.70x = 135,070,676.99
  5. Step 5: Solve for x
    x = 135,070,676.99/13,075.70
  6. Step 6: Final answer
    x = 10,329.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.