Home / 13,460.64-18,575.04-8,155.12

Finding the Fourth Proportional to 13,460.64, 18,575.04 and 8,155.12

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Solution

The fourth proportional to 13,460.64, 18,575.04 and 8,155.12 is: 11,253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.64 : 18,575.04 = 8,155.12 : x
  2. Step 2: Convert to fraction form
    13,460.64/18,575.04 = 8,155.12/x
  3. Step 3: Cross multiply
    13,460.64x = 18,575.04 × 8,155.12
  4. Step 4: Simplify right side
    13,460.64x = 151,481,680.20
  5. Step 5: Solve for x
    x = 151,481,680.20/13,460.64
  6. Step 6: Final answer
    x = 11,253.68

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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.