Home / 19,138.59-28,720.96-6,658.49

Finding the Fourth Proportional to 19,138.59, 28,720.96 and 6,658.49

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Solution

The fourth proportional to 19,138.59, 28,720.96 and 6,658.49 is: 9,992.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.59 : 28,720.96 = 6,658.49 : x
  2. Step 2: Convert to fraction form
    19,138.59/28,720.96 = 6,658.49/x
  3. Step 3: Cross multiply
    19,138.59x = 28,720.96 × 6,658.49
  4. Step 4: Simplify right side
    19,138.59x = 191,238,280.11
  5. Step 5: Solve for x
    x = 191,238,280.11/19,138.59
  6. Step 6: Final answer
    x = 9,992.29

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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.