Home / 20,914.67-31,364.21-8,430.48

Finding the Fourth Proportional to 20,914.67, 31,364.21 and 8,430.48

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Solution

The fourth proportional to 20,914.67, 31,364.21 and 8,430.48 is: 12,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.67 : 31,364.21 = 8,430.48 : x
  2. Step 2: Convert to fraction form
    20,914.67/31,364.21 = 8,430.48/x
  3. Step 3: Cross multiply
    20,914.67x = 31,364.21 × 8,430.48
  4. Step 4: Simplify right side
    20,914.67x = 264,415,366.20
  5. Step 5: Solve for x
    x = 264,415,366.20/20,914.67
  6. Step 6: Final answer
    x = 12,642.58

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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.