Home / 19,201.60-26,500.80-12,129.76

Finding the Fourth Proportional to 19,201.60, 26,500.80 and 12,129.76

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Solution

The fourth proportional to 19,201.60, 26,500.80 and 12,129.76 is: 16,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.60 : 26,500.80 = 12,129.76 : x
  2. Step 2: Convert to fraction form
    19,201.60/26,500.80 = 12,129.76/x
  3. Step 3: Cross multiply
    19,201.60x = 26,500.80 × 12,129.76
  4. Step 4: Simplify right side
    19,201.60x = 321,448,343.81
  5. Step 5: Solve for x
    x = 321,448,343.81/19,201.60
  6. Step 6: Final answer
    x = 16,740.71

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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.