Home / 13,518.68-18,520.27-13,013.29

Finding the Fourth Proportional to 13,518.68, 18,520.27 and 13,013.29

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Solution

The fourth proportional to 13,518.68, 18,520.27 and 13,013.29 is: 17,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.68 : 18,520.27 = 13,013.29 : x
  2. Step 2: Convert to fraction form
    13,518.68/18,520.27 = 13,013.29/x
  3. Step 3: Cross multiply
    13,518.68x = 18,520.27 × 13,013.29
  4. Step 4: Simplify right side
    13,518.68x = 241,009,551.79
  5. Step 5: Solve for x
    x = 241,009,551.79/13,518.68
  6. Step 6: Final answer
    x = 17,827.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.