Home / 15,455.91-21,328.98-8,741.61

Finding the Fourth Proportional to 15,455.91, 21,328.98 and 8,741.61

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Solution

The fourth proportional to 15,455.91, 21,328.98 and 8,741.61 is: 12,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.91 : 21,328.98 = 8,741.61 : x
  2. Step 2: Convert to fraction form
    15,455.91/21,328.98 = 8,741.61/x
  3. Step 3: Cross multiply
    15,455.91x = 21,328.98 × 8,741.61
  4. Step 4: Simplify right side
    15,455.91x = 186,449,624.86
  5. Step 5: Solve for x
    x = 186,449,624.86/15,455.91
  6. Step 6: Final answer
    x = 12,063.32

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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.