Home / 13,272.21-18,315.25-7,303.87

Finding the Fourth Proportional to 13,272.21, 18,315.25 and 7,303.87

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Solution

The fourth proportional to 13,272.21, 18,315.25 and 7,303.87 is: 10,079.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.21 : 18,315.25 = 7,303.87 : x
  2. Step 2: Convert to fraction form
    13,272.21/18,315.25 = 7,303.87/x
  3. Step 3: Cross multiply
    13,272.21x = 18,315.25 × 7,303.87
  4. Step 4: Simplify right side
    13,272.21x = 133,772,205.02
  5. Step 5: Solve for x
    x = 133,772,205.02/13,272.21
  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.