Home / 13,313.12-18,371.84-7,345.34

Finding the Fourth Proportional to 13,313.12, 18,371.84 and 7,345.34

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Solution

The fourth proportional to 13,313.12, 18,371.84 and 7,345.34 is: 10,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.12 : 18,371.84 = 7,345.34 : x
  2. Step 2: Convert to fraction form
    13,313.12/18,371.84 = 7,345.34/x
  3. Step 3: Cross multiply
    13,313.12x = 18,371.84 × 7,345.34
  4. Step 4: Simplify right side
    13,313.12x = 134,947,411.23
  5. Step 5: Solve for x
    x = 134,947,411.23/13,313.12
  6. Step 6: Final answer
    x = 10,136.42

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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.