Home / 13,465.60-18,579.36-8,159.20

Finding the Fourth Proportional to 13,465.60, 18,579.36 and 8,159.20

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Solution

The fourth proportional to 13,465.60, 18,579.36 and 8,159.20 is: 11,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.60 : 18,579.36 = 8,159.20 : x
  2. Step 2: Convert to fraction form
    13,465.60/18,579.36 = 8,159.20/x
  3. Step 3: Cross multiply
    13,465.60x = 18,579.36 × 8,159.20
  4. Step 4: Simplify right side
    13,465.60x = 151,592,714.11
  5. Step 5: Solve for x
    x = 151,592,714.11/13,465.60
  6. Step 6: Final answer
    x = 11,257.78

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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.