Home / 19,140.54-28,711.35-5,289.54

Finding the Fourth Proportional to 19,140.54, 28,711.35 and 5,289.54

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Solution

The fourth proportional to 19,140.54, 28,711.35 and 5,289.54 is: 7,934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.54 : 28,711.35 = 5,289.54 : x
  2. Step 2: Convert to fraction form
    19,140.54/28,711.35 = 5,289.54/x
  3. Step 3: Cross multiply
    19,140.54x = 28,711.35 × 5,289.54
  4. Step 4: Simplify right side
    19,140.54x = 151,869,834.28
  5. Step 5: Solve for x
    x = 151,869,834.28/19,140.54
  6. Step 6: Final answer
    x = 7,934.46

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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.