Home / 19,209.60-28,812.48-5,360.64

Finding the Fourth Proportional to 19,209.60, 28,812.48 and 5,360.64

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Solution

The fourth proportional to 19,209.60, 28,812.48 and 5,360.64 is: 8,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.60 : 28,812.48 = 5,360.64 : x
  2. Step 2: Convert to fraction form
    19,209.60/28,812.48 = 5,360.64/x
  3. Step 3: Cross multiply
    19,209.60x = 28,812.48 × 5,360.64
  4. Step 4: Simplify right side
    19,209.60x = 154,453,332.79
  5. Step 5: Solve for x
    x = 154,453,332.79/19,209.60
  6. Step 6: Final answer
    x = 8,040.42

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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.