Home / 13,281.92-18,328.80-7,313.46

Finding the Fourth Proportional to 13,281.92, 18,328.80 and 7,313.46

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Solution

The fourth proportional to 13,281.92, 18,328.80 and 7,313.46 is: 10,092.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.92 : 18,328.80 = 7,313.46 : x
  2. Step 2: Convert to fraction form
    13,281.92/18,328.80 = 7,313.46/x
  3. Step 3: Cross multiply
    13,281.92x = 18,328.80 × 7,313.46
  4. Step 4: Simplify right side
    13,281.92x = 134,046,945.65
  5. Step 5: Solve for x
    x = 134,046,945.65/13,281.92
  6. Step 6: Final answer
    x = 10,092.44

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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.