Home / 19,645.32-27,123.54-15,099.90

Finding the Fourth Proportional to 19,645.32, 27,123.54 and 15,099.90

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Solution

The fourth proportional to 19,645.32, 27,123.54 and 15,099.90 is: 20,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.32 : 27,123.54 = 15,099.90 : x
  2. Step 2: Convert to fraction form
    19,645.32/27,123.54 = 15,099.90/x
  3. Step 3: Cross multiply
    19,645.32x = 27,123.54 × 15,099.90
  4. Step 4: Simplify right side
    19,645.32x = 409,562,741.65
  5. Step 5: Solve for x
    x = 409,562,741.65/19,645.32
  6. Step 6: Final answer
    x = 20,847.85

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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.