Home / 13,188.24-18,293.04-12,715.56

Finding the Fourth Proportional to 13,188.24, 18,293.04 and 12,715.56

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Solution

The fourth proportional to 13,188.24, 18,293.04 and 12,715.56 is: 17,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.24 : 18,293.04 = 12,715.56 : x
  2. Step 2: Convert to fraction form
    13,188.24/18,293.04 = 12,715.56/x
  3. Step 3: Cross multiply
    13,188.24x = 18,293.04 × 12,715.56
  4. Step 4: Simplify right side
    13,188.24x = 232,606,247.70
  5. Step 5: Solve for x
    x = 232,606,247.70/13,188.24
  6. Step 6: Final answer
    x = 17,637.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.