Home / 19,138.79-28,707.93-6,658.58

Finding the Fourth Proportional to 19,138.79, 28,707.93 and 6,658.58

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Solution

The fourth proportional to 19,138.79, 28,707.93 and 6,658.58 is: 9,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.79 : 28,707.93 = 6,658.58 : x
  2. Step 2: Convert to fraction form
    19,138.79/28,707.93 = 6,658.58/x
  3. Step 3: Cross multiply
    19,138.79x = 28,707.93 × 6,658.58
  4. Step 4: Simplify right side
    19,138.79x = 191,153,905.00
  5. Step 5: Solve for x
    x = 191,153,905.00/19,138.79
  6. Step 6: Final answer
    x = 9,987.78

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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.