Home / 19,288.28-26,619.74-12,123.60

Finding the Fourth Proportional to 19,288.28, 26,619.74 and 12,123.60

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Solution

The fourth proportional to 19,288.28, 26,619.74 and 12,123.60 is: 16,731.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.28 : 26,619.74 = 12,123.60 : x
  2. Step 2: Convert to fraction form
    19,288.28/26,619.74 = 12,123.60/x
  3. Step 3: Cross multiply
    19,288.28x = 26,619.74 × 12,123.60
  4. Step 4: Simplify right side
    19,288.28x = 322,726,964.89
  5. Step 5: Solve for x
    x = 322,726,964.89/19,288.28
  6. Step 6: Final answer
    x = 16,731.76

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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.