Home / 13,580.16-20,355.60-5,680.63

Finding the Fourth Proportional to 13,580.16, 20,355.60 and 5,680.63

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Solution

The fourth proportional to 13,580.16, 20,355.60 and 5,680.63 is: 8,514.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.16 : 20,355.60 = 5,680.63 : x
  2. Step 2: Convert to fraction form
    13,580.16/20,355.60 = 5,680.63/x
  3. Step 3: Cross multiply
    13,580.16x = 20,355.60 × 5,680.63
  4. Step 4: Simplify right side
    13,580.16x = 115,632,678.77
  5. Step 5: Solve for x
    x = 115,632,678.77/13,580.16
  6. Step 6: Final answer
    x = 8,514.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.