Home / 15,354.24-21,188.71-8,639.73

Finding the Fourth Proportional to 15,354.24, 21,188.71 and 8,639.73

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Solution

The fourth proportional to 15,354.24, 21,188.71 and 8,639.73 is: 11,922.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,354.24 : 21,188.71 = 8,639.73 : x
  2. Step 2: Convert to fraction form
    15,354.24/21,188.71 = 8,639.73/x
  3. Step 3: Cross multiply
    15,354.24x = 21,188.71 × 8,639.73
  4. Step 4: Simplify right side
    15,354.24x = 183,064,733.45
  5. Step 5: Solve for x
    x = 183,064,733.45/15,354.24
  6. Step 6: Final answer
    x = 11,922.75

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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.