Home / 12,256.80-18,372.24-5,330.40

Finding the Fourth Proportional to 12,256.80, 18,372.24 and 5,330.40

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Solution

The fourth proportional to 12,256.80, 18,372.24 and 5,330.40 is: 7,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.80 : 18,372.24 = 5,330.40 : x
  2. Step 2: Convert to fraction form
    12,256.80/18,372.24 = 5,330.40/x
  3. Step 3: Cross multiply
    12,256.80x = 18,372.24 × 5,330.40
  4. Step 4: Simplify right side
    12,256.80x = 97,931,388.10
  5. Step 5: Solve for x
    x = 97,931,388.10/12,256.80
  6. Step 6: Final answer
    x = 7,989.96

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1.5x scale

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.