Home / 13,253.04-18,298.26-12,129.66

Finding the Fourth Proportional to 13,253.04, 18,298.26 and 12,129.66

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Solution

The fourth proportional to 13,253.04, 18,298.26 and 12,129.66 is: 16,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.04 : 18,298.26 = 12,129.66 : x
  2. Step 2: Convert to fraction form
    13,253.04/18,298.26 = 12,129.66/x
  3. Step 3: Cross multiply
    13,253.04x = 18,298.26 × 12,129.66
  4. Step 4: Simplify right side
    13,253.04x = 221,951,672.39
  5. Step 5: Solve for x
    x = 221,951,672.39/13,253.04
  6. Step 6: Final answer
    x = 16,747.23

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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.