Home / 20,712.42-31,051.44-8,224.74

Finding the Fourth Proportional to 20,712.42, 31,051.44 and 8,224.74

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Solution

The fourth proportional to 20,712.42, 31,051.44 and 8,224.74 is: 12,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.42 : 31,051.44 = 8,224.74 : x
  2. Step 2: Convert to fraction form
    20,712.42/31,051.44 = 8,224.74/x
  3. Step 3: Cross multiply
    20,712.42x = 31,051.44 × 8,224.74
  4. Step 4: Simplify right side
    20,712.42x = 255,390,020.63
  5. Step 5: Solve for x
    x = 255,390,020.63/20,712.42
  6. Step 6: Final answer
    x = 12,330.28

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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.