Home / 13,281.72-18,328.80-7,313.80

Finding the Fourth Proportional to 13,281.72, 18,328.80 and 7,313.80

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Solution

The fourth proportional to 13,281.72, 18,328.80 and 7,313.80 is: 10,093.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.72 : 18,328.80 = 7,313.80 : x
  2. Step 2: Convert to fraction form
    13,281.72/18,328.80 = 7,313.80/x
  3. Step 3: Cross multiply
    13,281.72x = 18,328.80 × 7,313.80
  4. Step 4: Simplify right side
    13,281.72x = 134,053,177.44
  5. Step 5: Solve for x
    x = 134,053,177.44/13,281.72
  6. Step 6: Final answer
    x = 10,093.06

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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.