Home / 13,088.58-18,073.14-12,138.84

Finding the Fourth Proportional to 13,088.58, 18,073.14 and 12,138.84

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Solution

The fourth proportional to 13,088.58, 18,073.14 and 12,138.84 is: 16,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.58 : 18,073.14 = 12,138.84 : x
  2. Step 2: Convert to fraction form
    13,088.58/18,073.14 = 12,138.84/x
  3. Step 3: Cross multiply
    13,088.58x = 18,073.14 × 12,138.84
  4. Step 4: Simplify right side
    13,088.58x = 219,386,954.76
  5. Step 5: Solve for x
    x = 219,386,954.76/13,088.58
  6. Step 6: Final answer
    x = 16,761.71

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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.