Home / 15,446.91-21,316.58-8,640.85

Finding the Fourth Proportional to 15,446.91, 21,316.58 and 8,640.85

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Solution

The fourth proportional to 15,446.91, 21,316.58 and 8,640.85 is: 11,924.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.91 : 21,316.58 = 8,640.85 : x
  2. Step 2: Convert to fraction form
    15,446.91/21,316.58 = 8,640.85/x
  3. Step 3: Cross multiply
    15,446.91x = 21,316.58 × 8,640.85
  4. Step 4: Simplify right side
    15,446.91x = 184,193,294.32
  5. Step 5: Solve for x
    x = 184,193,294.32/15,446.91
  6. Step 6: Final answer
    x = 11,924.28

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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.