Home / 13,518.64-20,253.60-12,705.36

Finding the Fourth Proportional to 13,518.64, 20,253.60 and 12,705.36

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Solution

The fourth proportional to 13,518.64, 20,253.60 and 12,705.36 is: 19,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.64 : 20,253.60 = 12,705.36 : x
  2. Step 2: Convert to fraction form
    13,518.64/20,253.60 = 12,705.36/x
  3. Step 3: Cross multiply
    13,518.64x = 20,253.60 × 12,705.36
  4. Step 4: Simplify right side
    13,518.64x = 257,329,279.30
  5. Step 5: Solve for x
    x = 257,329,279.30/13,518.64
  6. Step 6: Final answer
    x = 19,035.15

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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.