Home / 15,355.26-21,184.26-8,639.37

Finding the Fourth Proportional to 15,355.26, 21,184.26 and 8,639.37

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Solution

The fourth proportional to 15,355.26, 21,184.26 and 8,639.37 is: 11,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.26 : 21,184.26 = 8,639.37 : x
  2. Step 2: Convert to fraction form
    15,355.26/21,184.26 = 8,639.37/x
  3. Step 3: Cross multiply
    15,355.26x = 21,184.26 × 8,639.37
  4. Step 4: Simplify right side
    15,355.26x = 183,018,660.32
  5. Step 5: Solve for x
    x = 183,018,660.32/15,355.26
  6. Step 6: Final answer
    x = 11,918.96

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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.