Home / 19,385.72-29,078.58-5,345.86

Finding the Fourth Proportional to 19,385.72, 29,078.58 and 5,345.86

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Solution

The fourth proportional to 19,385.72, 29,078.58 and 5,345.86 is: 8,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.72 : 29,078.58 = 5,345.86 : x
  2. Step 2: Convert to fraction form
    19,385.72/29,078.58 = 5,345.86/x
  3. Step 3: Cross multiply
    19,385.72x = 29,078.58 × 5,345.86
  4. Step 4: Simplify right side
    19,385.72x = 155,450,017.68
  5. Step 5: Solve for x
    x = 155,450,017.68/19,385.72
  6. Step 6: Final answer
    x = 8,018.79

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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.