Home / 19,124.52-28,688.40-6,640.80

Finding the Fourth Proportional to 19,124.52, 28,688.40 and 6,640.80

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Solution

The fourth proportional to 19,124.52, 28,688.40 and 6,640.80 is: 9,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,124.52 : 28,688.40 = 6,640.80 : x
  2. Step 2: Convert to fraction form
    19,124.52/28,688.40 = 6,640.80/x
  3. Step 3: Cross multiply
    19,124.52x = 28,688.40 × 6,640.80
  4. Step 4: Simplify right side
    19,124.52x = 190,513,926.72
  5. Step 5: Solve for x
    x = 190,513,926.72/19,124.52
  6. Step 6: Final answer
    x = 9,961.76

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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.