Home / 13,540.79-18,686.55-7,573.11

Finding the Fourth Proportional to 13,540.79, 18,686.55 and 7,573.11

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Solution

The fourth proportional to 13,540.79, 18,686.55 and 7,573.11 is: 10,451.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.79 : 18,686.55 = 7,573.11 : x
  2. Step 2: Convert to fraction form
    13,540.79/18,686.55 = 7,573.11/x
  3. Step 3: Cross multiply
    13,540.79x = 18,686.55 × 7,573.11
  4. Step 4: Simplify right side
    13,540.79x = 141,515,298.67
  5. Step 5: Solve for x
    x = 141,515,298.67/13,540.79
  6. Step 6: Final answer
    x = 10,451.04

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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.