Home / 30,479.28-45,795.60-19,390.92

Finding the Fourth Proportional to 30,479.28, 45,795.60 and 19,390.92

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Solution

The fourth proportional to 30,479.28, 45,795.60 and 19,390.92 is: 29,135.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.28 : 45,795.60 = 19,390.92 : x
  2. Step 2: Convert to fraction form
    30,479.28/45,795.60 = 19,390.92/x
  3. Step 3: Cross multiply
    30,479.28x = 45,795.60 × 19,390.92
  4. Step 4: Simplify right side
    30,479.28x = 888,018,815.95
  5. Step 5: Solve for x
    x = 888,018,815.95/30,479.28
  6. Step 6: Final answer
    x = 29,135.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.