Home / 19,132.15-28,681.79-6,650.55

Finding the Fourth Proportional to 19,132.15, 28,681.79 and 6,650.55

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Solution

The fourth proportional to 19,132.15, 28,681.79 and 6,650.55 is: 9,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,132.15 : 28,681.79 = 6,650.55 : x
  2. Step 2: Convert to fraction form
    19,132.15/28,681.79 = 6,650.55/x
  3. Step 3: Cross multiply
    19,132.15x = 28,681.79 × 6,650.55
  4. Step 4: Simplify right side
    19,132.15x = 190,749,678.48
  5. Step 5: Solve for x
    x = 190,749,678.48/19,132.15
  6. Step 6: Final answer
    x = 9,970.11

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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.