Home / 19,123.40-26,421.96-15,120.84

Finding the Fourth Proportional to 19,123.40, 26,421.96 and 15,120.84

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Solution

The fourth proportional to 19,123.40, 26,421.96 and 15,120.84 is: 20,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,123.40 : 26,421.96 = 15,120.84 : x
  2. Step 2: Convert to fraction form
    19,123.40/26,421.96 = 15,120.84/x
  3. Step 3: Cross multiply
    19,123.40x = 26,421.96 × 15,120.84
  4. Step 4: Simplify right side
    19,123.40x = 399,522,229.65
  5. Step 5: Solve for x
    x = 399,522,229.65/19,123.40
  6. Step 6: Final answer
    x = 20,891.80

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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.