Home / 13,045.14-18,000.77-7,380.54

Finding the Fourth Proportional to 13,045.14, 18,000.77 and 7,380.54

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Solution

The fourth proportional to 13,045.14, 18,000.77 and 7,380.54 is: 10,184.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.14 : 18,000.77 = 7,380.54 : x
  2. Step 2: Convert to fraction form
    13,045.14/18,000.77 = 7,380.54/x
  3. Step 3: Cross multiply
    13,045.14x = 18,000.77 × 7,380.54
  4. Step 4: Simplify right side
    13,045.14x = 132,855,366.11
  5. Step 5: Solve for x
    x = 132,855,366.11/13,045.14
  6. Step 6: Final answer
    x = 10,184.28

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Half scale
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Double scale
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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.