Home / 13,426.23-18,528.15-8,119.51

Finding the Fourth Proportional to 13,426.23, 18,528.15 and 8,119.51

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Solution

The fourth proportional to 13,426.23, 18,528.15 and 8,119.51 is: 11,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.23 : 18,528.15 = 8,119.51 : x
  2. Step 2: Convert to fraction form
    13,426.23/18,528.15 = 8,119.51/x
  3. Step 3: Cross multiply
    13,426.23x = 18,528.15 × 8,119.51
  4. Step 4: Simplify right side
    13,426.23x = 150,439,499.21
  5. Step 5: Solve for x
    x = 150,439,499.21/13,426.23
  6. Step 6: Final answer
    x = 11,204.90

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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.