Home / 12,280.36-18,420.54-5,350

Finding the Fourth Proportional to 12,280.36, 18,420.54 and 5,350

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Solution

The fourth proportional to 12,280.36, 18,420.54 and 5,350 is: 8,025

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.36 : 18,420.54 = 5,350 : x
  2. Step 2: Convert to fraction form
    12,280.36/18,420.54 = 5,350/x
  3. Step 3: Cross multiply
    12,280.36x = 18,420.54 × 5,350
  4. Step 4: Simplify right side
    12,280.36x = 98,549,889
  5. Step 5: Solve for x
    x = 98,549,889/12,280.36
  6. Step 6: Final answer
    x = 8,025

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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.