Home / 19,678.08-29,515.20-5,637.60

Finding the Fourth Proportional to 19,678.08, 29,515.20 and 5,637.60

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Solution

The fourth proportional to 19,678.08, 29,515.20 and 5,637.60 is: 8,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.08 : 29,515.20 = 5,637.60 : x
  2. Step 2: Convert to fraction form
    19,678.08/29,515.20 = 5,637.60/x
  3. Step 3: Cross multiply
    19,678.08x = 29,515.20 × 5,637.60
  4. Step 4: Simplify right side
    19,678.08x = 166,394,891.52
  5. Step 5: Solve for x
    x = 166,394,891.52/19,678.08
  6. Step 6: Final answer
    x = 8,455.85

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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.