Home / 15,286.32-21,107.59-12,454.16

Finding the Fourth Proportional to 15,286.32, 21,107.59 and 12,454.16

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Solution

The fourth proportional to 15,286.32, 21,107.59 and 12,454.16 is: 17,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.32 : 21,107.59 = 12,454.16 : x
  2. Step 2: Convert to fraction form
    15,286.32/21,107.59 = 12,454.16/x
  3. Step 3: Cross multiply
    15,286.32x = 21,107.59 × 12,454.16
  4. Step 4: Simplify right side
    15,286.32x = 262,877,166.40
  5. Step 5: Solve for x
    x = 262,877,166.40/15,286.32
  6. Step 6: Final answer
    x = 17,196.89

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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.