Home / 13,271.62-18,315.12-7,303.60

Finding the Fourth Proportional to 13,271.62, 18,315.12 and 7,303.60

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Solution

The fourth proportional to 13,271.62, 18,315.12 and 7,303.60 is: 10,079.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.62 : 18,315.12 = 7,303.60 : x
  2. Step 2: Convert to fraction form
    13,271.62/18,315.12 = 7,303.60/x
  3. Step 3: Cross multiply
    13,271.62x = 18,315.12 × 7,303.60
  4. Step 4: Simplify right side
    13,271.62x = 133,766,310.43
  5. Step 5: Solve for x
    x = 133,766,310.43/13,271.62
  6. Step 6: Final answer
    x = 10,079.12

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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.