Home / 13,656.72-20,478.54-5,330.28

Finding the Fourth Proportional to 13,656.72, 20,478.54 and 5,330.28

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Solution

The fourth proportional to 13,656.72, 20,478.54 and 5,330.28 is: 7,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.72 : 20,478.54 = 5,330.28 : x
  2. Step 2: Convert to fraction form
    13,656.72/20,478.54 = 5,330.28/x
  3. Step 3: Cross multiply
    13,656.72x = 20,478.54 × 5,330.28
  4. Step 4: Simplify right side
    13,656.72x = 109,156,352.19
  5. Step 5: Solve for x
    x = 109,156,352.19/13,656.72
  6. Step 6: Final answer
    x = 7,992.87

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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.