Home / 20,587.76-30,792.60-12,134.16

Finding the Fourth Proportional to 20,587.76, 30,792.60 and 12,134.16

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Solution

The fourth proportional to 20,587.76, 30,792.60 and 12,134.16 is: 18,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.76 : 30,792.60 = 12,134.16 : x
  2. Step 2: Convert to fraction form
    20,587.76/30,792.60 = 12,134.16/x
  3. Step 3: Cross multiply
    20,587.76x = 30,792.60 × 12,134.16
  4. Step 4: Simplify right side
    20,587.76x = 373,642,335.22
  5. Step 5: Solve for x
    x = 373,642,335.22/20,587.76
  6. Step 6: Final answer
    x = 18,148.76

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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.