Home / 13,740.60-18,971.63-12,134.95

Finding the Fourth Proportional to 13,740.60, 18,971.63 and 12,134.95

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Solution

The fourth proportional to 13,740.60, 18,971.63 and 12,134.95 is: 16,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.60 : 18,971.63 = 12,134.95 : x
  2. Step 2: Convert to fraction form
    13,740.60/18,971.63 = 12,134.95/x
  3. Step 3: Cross multiply
    13,740.60x = 18,971.63 × 12,134.95
  4. Step 4: Simplify right side
    13,740.60x = 230,219,720.79
  5. Step 5: Solve for x
    x = 230,219,720.79/13,740.60
  6. Step 6: Final answer
    x = 16,754.71

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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.