Home / 13,585.12-18,764.64-12,258.40

Finding the Fourth Proportional to 13,585.12, 18,764.64 and 12,258.40

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Solution

The fourth proportional to 13,585.12, 18,764.64 and 12,258.40 is: 16,932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.12 : 18,764.64 = 12,258.40 : x
  2. Step 2: Convert to fraction form
    13,585.12/18,764.64 = 12,258.40/x
  3. Step 3: Cross multiply
    13,585.12x = 18,764.64 × 12,258.40
  4. Step 4: Simplify right side
    13,585.12x = 230,024,462.98
  5. Step 5: Solve for x
    x = 230,024,462.98/13,585.12
  6. Step 6: Final answer
    x = 16,932.09

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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.