Home / 19,123.80-28,688.40-5,974.80

Finding the Fourth Proportional to 19,123.80, 28,688.40 and 5,974.80

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Solution

The fourth proportional to 19,123.80, 28,688.40 and 5,974.80 is: 8,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,123.80 : 28,688.40 = 5,974.80 : x
  2. Step 2: Convert to fraction form
    19,123.80/28,688.40 = 5,974.80/x
  3. Step 3: Cross multiply
    19,123.80x = 28,688.40 × 5,974.80
  4. Step 4: Simplify right side
    19,123.80x = 171,407,452.32
  5. Step 5: Solve for x
    x = 171,407,452.32/19,123.80
  6. Step 6: Final answer
    x = 8,963.04

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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.