Home / 13,528.08-18,662.40-8,810.64

Finding the Fourth Proportional to 13,528.08, 18,662.40 and 8,810.64

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Solution

The fourth proportional to 13,528.08, 18,662.40 and 8,810.64 is: 12,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.08 : 18,662.40 = 8,810.64 : x
  2. Step 2: Convert to fraction form
    13,528.08/18,662.40 = 8,810.64/x
  3. Step 3: Cross multiply
    13,528.08x = 18,662.40 × 8,810.64
  4. Step 4: Simplify right side
    13,528.08x = 164,427,687.94
  5. Step 5: Solve for x
    x = 164,427,687.94/13,528.08
  6. Step 6: Final answer
    x = 12,154.55

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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.