Home / 19,578.38-29,309.24-18,878.54

Finding the Fourth Proportional to 19,578.38, 29,309.24 and 18,878.54

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Solution

The fourth proportional to 19,578.38, 29,309.24 and 18,878.54 is: 28,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.38 : 29,309.24 = 18,878.54 : x
  2. Step 2: Convert to fraction form
    19,578.38/29,309.24 = 18,878.54/x
  3. Step 3: Cross multiply
    19,578.38x = 29,309.24 × 18,878.54
  4. Step 4: Simplify right side
    19,578.38x = 553,315,659.71
  5. Step 5: Solve for x
    x = 553,315,659.71/19,578.38
  6. Step 6: Final answer
    x = 28,261.57

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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.