Home / 15,450.12-21,322.98-9,479.70

Finding the Fourth Proportional to 15,450.12, 21,322.98 and 9,479.70

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Solution

The fourth proportional to 15,450.12, 21,322.98 and 9,479.70 is: 13,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.12 : 21,322.98 = 9,479.70 : x
  2. Step 2: Convert to fraction form
    15,450.12/21,322.98 = 9,479.70/x
  3. Step 3: Cross multiply
    15,450.12x = 21,322.98 × 9,479.70
  4. Step 4: Simplify right side
    15,450.12x = 202,135,453.51
  5. Step 5: Solve for x
    x = 202,135,453.51/15,450.12
  6. Step 6: Final answer
    x = 13,083.10

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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.