Home / 20,445.51-30,671.72-6,402.77

Finding the Fourth Proportional to 20,445.51, 30,671.72 and 6,402.77

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Solution

The fourth proportional to 20,445.51, 30,671.72 and 6,402.77 is: 9,605.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.51 : 30,671.72 = 6,402.77 : x
  2. Step 2: Convert to fraction form
    20,445.51/30,671.72 = 6,402.77/x
  3. Step 3: Cross multiply
    20,445.51x = 30,671.72 × 6,402.77
  4. Step 4: Simplify right side
    20,445.51x = 196,383,968.66
  5. Step 5: Solve for x
    x = 196,383,968.66/20,445.51
  6. Step 6: Final answer
    x = 9,605.24

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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.