Home / 13,280.49-18,324.69-7,975.40

Finding the Fourth Proportional to 13,280.49, 18,324.69 and 7,975.40

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Solution

The fourth proportional to 13,280.49, 18,324.69 and 7,975.40 is: 11,004.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.49 : 18,324.69 = 7,975.40 : x
  2. Step 2: Convert to fraction form
    13,280.49/18,324.69 = 7,975.40/x
  3. Step 3: Cross multiply
    13,280.49x = 18,324.69 × 7,975.40
  4. Step 4: Simplify right side
    13,280.49x = 146,146,732.63
  5. Step 5: Solve for x
    x = 146,146,732.63/13,280.49
  6. Step 6: Final answer
    x = 11,004.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.